18413732 has 12 divisors (see below), whose sum is σ = 32259276. Its totient is φ = 9196800.

The previous prime is 18413719. The next prime is 18413741. The reversal of 18413732 is 23731481.

It can be written as a sum of positive squares in 2 ways, for example, as 1240996 + 17172736 = 1114^2 + 4144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18413695 and 18413704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (2688273).

Almost surely, 2^18413732 is an apocalyptic number.

It is an amenable number.

18413732 is a deficient number, since it is larger than the sum of its proper divisors (13845544).

18413732 is a wasteful number, since it uses less digits than its factorization.

18413732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038 (or 5036 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 18413732 is about 4291.1224638782. The cubic root of 18413732 is about 264.0668831153.

The spelling of 18413732 in words is "eighteen million, four hundred thirteen thousand, seven hundred thirty-two".