18537579332 has 6 divisors (see below), whose sum is σ = 32440763838. Its totient is φ = 9268789664.

The previous prime is 18537579301. The next prime is 18537579343. The reversal of 18537579332 is 23397573581.

It can be written as a sum of positive squares in only one way, i.e., 17563140676 + 974438656 = 132526^2 + 31216^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2317197413 + ... + 2317197420.

It is an arithmetic number, because the mean of its divisors is an integer number (5406793973).

Almost surely, 2^18537579332 is an apocalyptic number.

It is an amenable number.

18537579332 is a deficient number, since it is larger than the sum of its proper divisors (13903184506).

18537579332 is a wasteful number, since it uses less digits than its factorization.

18537579332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634394837 (or 4634394835 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 53.

The spelling of 18537579332 in words is "eighteen billion, five hundred thirty-seven million, five hundred seventy-nine thousand, three hundred thirty-two".