18648712 has 8 divisors (see below), whose sum is σ = 34966350. Its totient is φ = 9324352.

The previous prime is 18648697. The next prime is 18648733. The reversal of 18648712 is 21784681.

It can be written as a sum of positive squares in only one way, i.e., 16760836 + 1887876 = 4094^2 + 1374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165537 + ... + 1165552.

Almost surely, 2^18648712 is an apocalyptic number.

It is an amenable number.

18648712 is a deficient number, since it is larger than the sum of its proper divisors (16317638).

18648712 is a wasteful number, since it uses less digits than its factorization.

18648712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331095 (or 2331091 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 18648712 is about 4318.4154501391. The cubic root of 18648712 is about 265.1854024741.

The spelling of 18648712 in words is "eighteen million, six hundred forty-eight thousand, seven hundred twelve".