1902987392 has 64 divisors (see below), whose sum is σ = 3857884800. Its totient is φ = 934861824.

The previous prime is 1902987379. The next prime is 1902987467. The reversal of 1902987392 is 2937892091.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1902987392² = 7242722028221923328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1902987392.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3104078 + ... + 3104690.

It is an arithmetic number, because the mean of its divisors is an integer number (60279450).

Almost surely, 2^1902987392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1902987392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928942400).

1902987392 is an abundant number, since it is smaller than the sum of its proper divisors (1954897408).

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

1902987392 is an equidigital number, since it uses as much as digits as its factorization.

1902987392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1902987392 is about 43623.2437124980. The cubic root of 1902987392 is about 1239.2111250101.

The spelling of 1902987392 in words is "one billion, nine hundred two million, nine hundred eighty-seven thousand, three hundred ninety-two".