1902032656164 has 135 divisors (see below), whose sum is σ = 5283154029153. Its totient is φ = 596583729792.

The previous prime is 1902032656151. The next prime is 1902032656187. The reversal of 1902032656164 is 4616562302091.

The square root of 1902032656164 is 1379142.

It is a perfect power (a square), and thus also a powerful number.

1902032656164 is a `hidden beast` number, since 1 + 9 + 0 + 2 + 0 + 3 + 26 + 5 + 616 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1480821272100 + 421211384064 = 1216890^2 + 649008^2 .

It is a super-2 number, since 2×1902032656164² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 422015199 + ... + 422019705.

Almost surely, 2^{1902032656164} is an apocalyptic number.

1902032656164 is the 1379142-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1902032656164

1902032656164 is an abundant number, since it is smaller than the sum of its proper divisors (3381121372989).

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

1902032656164 is an frugal number, since it uses more digits than its factorization.

1902032656164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064 (or 4529 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 1902032656164 in words is "one trillion, nine hundred two billion, thirty-two million, six hundred fifty-six thousand, one hundred sixty-four".