1049811840 has 640 divisors, whose sum is σ = 4691934720. Its totient is φ = 217313280.

The previous prime is 1049811781. The next prime is 1049811901. The reversal of 1049811840 is 481189401.

1049811840 is a `hidden beast` number, since 10 + 498 + 118 + 40 = 666.

1049811840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-2 number, since 2×1049811840² = 2204209798808371200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1049811795 and 1049811804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3991549 + ... + 3991811.

It is an arithmetic number, because the mean of its divisors is an integer number (7331148).

Almost surely, 2^1049811840 is an apocalyptic number.

1049811840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1049811840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2345967360).

1049811840 is an abundant number, since it is smaller than the sum of its proper divisors (3642122880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1049811840 is a wasteful number, since it uses less digits than its factorization.

1049811840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1049811840 is about 32400.7999901237. The cubic root of 1049811840 is about 1016.3356404455.

The spelling of 1049811840 in words is "one billion, forty-nine million, eight hundred eleven thousand, eight hundred forty".