15902649402 has 8 divisors (see below), whose sum is σ = 31805298816. Its totient is φ = 5300883132.

The previous prime is 15902649401. The next prime is 15902649403. The reversal of 15902649402 is 20494620951.

It is an interprime number because it is at equal distance from previous prime (15902649401) and next prime (15902649403).

It is a sphenic number, since it is the product of 3 distinct primes.

15902649402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (15902649401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325220778 + ... + 1325220789.

It is an arithmetic number, because the mean of its divisors is an integer number (3975662352).

Almost surely, 2^15902649402 is an apocalyptic number.

15902649402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15902649402 is a wasteful number, since it uses less digits than its factorization.

15902649402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650441572.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 15902649402 in words is "fifteen billion, nine hundred two million, six hundred forty-nine thousand, four hundred two".