18332185412 has 6 divisors (see below), whose sum is σ = 32081324478. Its totient is φ = 9166092704.

The previous prime is 18332185409. The next prime is 18332185429. The reversal of 18332185412 is 21458123381.

It can be written as a sum of positive squares in only one way, i.e., 13882494976 + 4449690436 = 117824^2 + 66706^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2291523173 + ... + 2291523180.

It is an arithmetic number, because the mean of its divisors is an integer number (5346887413).

Almost surely, 2^18332185412 is an apocalyptic number.

It is an amenable number.

18332185412 is a deficient number, since it is larger than the sum of its proper divisors (13749139066).

18332185412 is a wasteful number, since it uses less digits than its factorization.

18332185412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583046357 (or 4583046355 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The spelling of 18332185412 in words is "eighteen billion, three hundred thirty-two million, one hundred eighty-five thousand, four hundred twelve".