18536718352 has 20 divisors (see below), whose sum is σ = 35967497040. Its totient is φ = 9254783648.

The previous prime is 18536718337. The next prime is 18536718373. The reversal of 18536718352 is 25381763581.

It is a super-3 number, since 3×18536718352³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 18536718296 and 18536718305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837202 + ... + 859057.

It is an arithmetic number, because the mean of its divisors is an integer number (1798374852).

Almost surely, 2^18536718352 is an apocalyptic number.

It is an amenable number.

18536718352 is a deficient number, since it is larger than the sum of its proper divisors (17430778688).

18536718352 is a wasteful number, since it uses less digits than its factorization.

18536718352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696950 (or 1696944 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 18536718352 in words is "eighteen billion, five hundred thirty-six million, seven hundred eighteen thousand, three hundred fifty-two".