18357373830 has 32 divisors (see below), whose sum is σ = 46376524800. Its totient is φ = 4637652192.

The previous prime is 18357373817. The next prime is 18357373873. The reversal of 18357373830 is 3837375381.

It is a self number, because there is not a number n which added to its sum of digits gives 18357373830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16102390 + ... + 16103529.

It is an arithmetic number, because the mean of its divisors is an integer number (1449266400).

Almost surely, 2^18357373830 is an apocalyptic number.

18357373830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18357373830 is an abundant number, since it is smaller than the sum of its proper divisors (28019150970).

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

18357373830 is a wasteful number, since it uses less digits than its factorization.

18357373830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32205948.

The product of its (nonzero) digits is 1270080, while the sum is 48.

It can be divided in two parts, 183573 and 73830, that added together give a triangular number (257403 = T₇₁₇).

The spelling of 18357373830 in words is "eighteen billion, three hundred fifty-seven million, three hundred seventy-three thousand, eight hundred thirty".