18357131870 has 64 divisors (see below), whose sum is σ = 41224398336. Its totient is φ = 5717796480.

The previous prime is 18357131869. The next prime is 18357131873. The reversal of 18357131870 is 7813175381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18357131873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1245464 + ... + 1260116.

It is an arithmetic number, because the mean of its divisors is an integer number (644131224).

Almost surely, 2^18357131870 is an apocalyptic number.

18357131870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18357131870 is an abundant number, since it is smaller than the sum of its proper divisors (22867266466).

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

18357131870 is a wasteful number, since it uses less digits than its factorization.

18357131870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16305.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 18357131870 in words is "eighteen billion, three hundred fifty-seven million, one hundred thirty-one thousand, eight hundred seventy".