18157300552 has 8 divisors (see below), whose sum is σ = 34044938550. Its totient is φ = 9078650272.

The previous prime is 18157300547. The next prime is 18157300559. The reversal of 18157300552 is 25500375181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17807834916 + 349465636 = 133446^2 + 18694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18157300559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134831277 + ... + 1134831292.

Almost surely, 2^18157300552 is an apocalyptic number.

It is an amenable number.

18157300552 is a deficient number, since it is larger than the sum of its proper divisors (15887637998).

18157300552 is a wasteful number, since it uses less digits than its factorization.

18157300552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269662575 (or 2269662571 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 18157300552 in words is "eighteen billion, one hundred fifty-seven million, three hundred thousand, five hundred fifty-two".