18158658882 has 128 divisors (see below), whose sum is σ = 45249921024. Its totient is φ = 4730358528.

The previous prime is 18158658871. The next prime is 18158658883. The reversal of 18158658882 is 28885685181.

It is not an unprimeable number, because it can be changed into a prime (18158658883) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21287568 + ... + 21288420.

It is an arithmetic number, because the mean of its divisors is an integer number (353515008).

Almost surely, 2^18158658882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18158658882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22624960512).

18158658882 is an abundant number, since it is smaller than the sum of its proper divisors (27091262142).

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

18158658882 is a wasteful number, since it uses less digits than its factorization.

18158658882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its digits is 9830400, while the sum is 60.

The spelling of 18158658882 in words is "eighteen billion, one hundred fifty-eight million, six hundred fifty-eight thousand, eight hundred eighty-two".