1869305040 has 400 divisors, whose sum is σ = 7000266240. Its totient is φ = 460615680.

The previous prime is 1869305021. The next prime is 1869305047. The reversal of 1869305040 is 405039681.

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 = 1869304986 and 1869305004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1869305047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7821241 + ... + 7821479.

Almost surely, 2^1869305040 is an apocalyptic number.

1869305040 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 1869305040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3500133120).

1869305040 is an abundant number, since it is smaller than the sum of its proper divisors (5130961200).

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

1869305040 is a wasteful number, since it uses less digits than its factorization.

1869305040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1869305040 is about 43235.4604462587. The cubic root of 1869305040 is about 1231.8563284702.

The spelling of 1869305040 in words is "one billion, eight hundred sixty-nine million, three hundred five thousand, forty".