18920801082 has 32 divisors (see below), whose sum is σ = 39165511680. Its totient is φ = 6087357360.

The previous prime is 18920801041. The next prime is 18920801089. The reversal of 18920801082 is 28010802981.

It is a super-2 number, since 2×18920801082² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18920801082.

It is not an unprimeable number, because it can be changed into a prime (18920801089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63708 + ... + 204695.

It is an arithmetic number, because the mean of its divisors is an integer number (1223922240).

Almost surely, 2^18920801082 is an apocalyptic number.

18920801082 is an abundant number, since it is smaller than the sum of its proper divisors (20244710598).

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

18920801082 is a wasteful number, since it uses less digits than its factorization.

18920801082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268818.

The product of its (nonzero) digits is 18432, while the sum is 39.

The spelling of 18920801082 in words is "eighteen billion, nine hundred twenty million, eight hundred one thousand, eighty-two".