1902128004 has 72 divisors (see below), whose sum is σ = 5570364800. Its totient is φ = 536015232.

The previous prime is 1902128003. The next prime is 1902128017. The reversal of 1902128004 is 4008212091.

It is not an unprimeable number, because it can be changed into a prime (1902128003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33304 + ... + 70095.

Almost surely, 2^1902128004 is an apocalyptic number.

1902128004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1902128004 is an abundant number, since it is smaller than the sum of its proper divisors (3668236796).

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

1902128004 is a wasteful number, since it uses less digits than its factorization.

1902128004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103489 (or 103484 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1902128004 is about 43613.3924844193. The cubic root of 1902128004 is about 1239.0245545810.

The spelling of 1902128004 in words is "one billion, nine hundred two million, one hundred twenty-eight thousand, four".