1902004540 has 24 divisors (see below), whose sum is σ = 4229163792. Its totient is φ = 716048640.

The previous prime is 1902004529. The next prime is 1902004541. The reversal of 1902004540 is 454002091.

It is a super-2 number, since 2×1902004540² = 7235242540361223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902004541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2796726 + ... + 2797405.

It is an arithmetic number, because the mean of its divisors is an integer number (176215158).

Almost surely, 2^1902004540 is an apocalyptic number.

1902004540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1902004540 is an abundant number, since it is smaller than the sum of its proper divisors (2327159252).

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

1902004540 is a wasteful number, since it uses less digits than its factorization.

1902004540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594157 (or 5594155 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1902004540 is about 43611.9770246661. The cubic root of 1902004540 is about 1238.9977463190.

The spelling of 1902004540 in words is "one billion, nine hundred two million, four thousand, five hundred forty".