18887183372 has 6 divisors (see below), whose sum is σ = 33052570908. Its totient is φ = 9443591684.

The previous prime is 18887183351. The next prime is 18887183383. The reversal of 18887183372 is 27338178881.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2360897918 + ... + 2360897925.

It is an arithmetic number, because the mean of its divisors is an integer number (5508761818).

Almost surely, 2^18887183372 is an apocalyptic number.

It is an amenable number.

18887183372 is a deficient number, since it is larger than the sum of its proper divisors (14165387536).

18887183372 is a wasteful number, since it uses less digits than its factorization.

18887183372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721795847 (or 4721795845 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 56.

The spelling of 18887183372 in words is "eighteen billion, eight hundred eighty-seven million, one hundred eighty-three thousand, three hundred seventy-two".