18157300488 has 24 divisors (see below), whose sum is σ = 49176022350. Its totient is φ = 6052433472.

The previous prime is 18157300477. The next prime is 18157300489. The reversal of 18157300488 is 88400375181.

It is a happy number.

18157300488 is a `hidden beast` number, since 18 + 157 + 3 + 0 + 0 + 488 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18116621604 + 40678884 = 134598^2 + 6378^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×18157300488² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18157300489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126092293 + ... + 126092436.

Almost surely, 2^18157300488 is an apocalyptic number.

18157300488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18157300488 is an abundant number, since it is smaller than the sum of its proper divisors (31018721862).

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

18157300488 is a wasteful number, since it uses less digits than its factorization.

18157300488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252184741 (or 252184734 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 18157300488 in words is "eighteen billion, one hundred fifty-seven million, three hundred thousand, four hundred eighty-eight".