18237323732 has 12 divisors (see below), whose sum is σ = 31916271156. Its totient is φ = 9118389120.

The previous prime is 18237323723. The next prime is 18237323743. The reversal of 18237323732 is 23732373281.

It can be written as a sum of positive squares in 2 ways, for example, as 6375064336 + 11862259396 = 79844^2 + 108914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18237323732.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195932 + ... + 273612.

It is an arithmetic number, because the mean of its divisors is an integer number (2659689263).

Almost surely, 2^18237323732 is an apocalyptic number.

It is an amenable number.

18237323732 is a deficient number, since it is larger than the sum of its proper divisors (13678947424).

18237323732 is a wasteful number, since it uses less digits than its factorization.

18237323732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136378 (or 136376 counting only the distinct ones).

The product of its digits is 254016, while the sum is 41.

The spelling of 18237323732 in words is "eighteen billion, two hundred thirty-seven million, three hundred twenty-three thousand, seven hundred thirty-two".