18557946230 has 16 divisors (see below), whose sum is σ = 33406833024. Its totient is φ = 7422616320.

The previous prime is 18557946229. The next prime is 18557946233. The reversal of 18557946230 is 3264975581.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18557946233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84635 + ... + 210425.

It is an arithmetic number, because the mean of its divisors is an integer number (2087927064).

It is a 2-persistent number, because it is pandigital, and so is 2⋅18557946230 = 37115892460, but 3⋅18557946230 = 55673838690 is not.

Almost surely, 2^18557946230 is an apocalyptic number.

18557946230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18557946230 is a deficient number, since it is larger than the sum of its proper divisors (14848886794).

18557946230 is a wasteful number, since it uses less digits than its factorization.

18557946230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140551.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 18557946230 in words is "eighteen billion, five hundred fifty-seven million, nine hundred forty-six thousand, two hundred thirty".