1149344640 has 160 divisors (see below), whose sum is σ = 4104702360. Its totient is φ = 306478080.

The previous prime is 1149344639. The next prime is 1149344699. The reversal of 1149344640 is 464439411.

It is a happy number.

1149344640 is a `hidden beast` number, since 1 + 1 + 4 + 9 + 3 + 4 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

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 = 1149344595 and 1149344604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40755 + ... + 62925.

Almost surely, 2^1149344640 is an apocalyptic number.

1149344640 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 1149344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052351180).

1149344640 is an abundant number, since it is smaller than the sum of its proper divisors (2955357720).

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

1149344640 is an equidigital number, since it uses as much as digits as its factorization.

1149344640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22202 (or 22181 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1149344640 is about 33901.9857825467. The cubic root of 1149344640 is about 1047.4904968541.

The spelling of 1149344640 in words is "one billion, one hundred forty-nine million, three hundred forty-four thousand, six hundred forty".