18689352932 has 12 divisors (see below), whose sum is σ = 32707342080. Its totient is φ = 9344398056.

The previous prime is 18689352911. The next prime is 18689352973. The reversal of 18689352932 is 23925398681.

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, 184553 + ... + 267279.

It is an arithmetic number, because the mean of its divisors is an integer number (2725611840).

Almost surely, 2^18689352932 is an apocalyptic number.

It is an amenable number.

18689352932 is a deficient number, since it is larger than the sum of its proper divisors (14017989148).

18689352932 is a wasteful number, since it uses less digits than its factorization.

18689352932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139210 (or 139208 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 56.

The spelling of 18689352932 in words is "eighteen billion, six hundred eighty-nine million, three hundred fifty-two thousand, nine hundred thirty-two".