815168981982 has 32 divisors (see below), whose sum is σ = 1634537556000. Its totient is φ = 271023484928.

The previous prime is 815168981981. The next prime is 815168982031. The reversal of 815168981982 is 289189861518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815168981981) 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, 7914994 + ... + 8017322.

It is an arithmetic number, because the mean of its divisors is an integer number (51079298625).

Almost surely, 2^815168981982 is an apocalyptic number.

815168981982 is an abundant number, since it is smaller than the sum of its proper divisors (819368574018).

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

815168981982 is a wasteful number, since it uses less digits than its factorization.

815168981982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105740.

The product of its digits is 19906560, while the sum is 66.

The spelling of 815168981982 in words is "eight hundred fifteen billion, one hundred sixty-eight million, nine hundred eighty-one thousand, nine hundred eighty-two".