18872257180 has 24 divisors (see below), whose sum is σ = 45293417568. Its totient is φ = 6470488128.

The previous prime is 18872257171. The next prime is 18872257199. The reversal of 18872257180 is 8175227881.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67400779 + ... + 67401058.

It is an arithmetic number, because the mean of its divisors is an integer number (1887225732).

Almost surely, 2^18872257180 is an apocalyptic number.

18872257180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18872257180 is an abundant number, since it is smaller than the sum of its proper divisors (26421160388).

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

18872257180 is a wasteful number, since it uses less digits than its factorization.

18872257180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134801853 (or 134801851 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 49.

The spelling of 18872257180 in words is "eighteen billion, eight hundred seventy-two million, two hundred fifty-seven thousand, one hundred eighty".