18100612 has 12 divisors (see below), whose sum is σ = 31705996. Its totient is φ = 9041760.

The previous prime is 18100603. The next prime is 18100619. The reversal of 18100612 is 21600181.

It can be written as a sum of positive squares in 2 ways, for example, as 12068676 + 6031936 = 3474^2 + 2456^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18100612.

It is not an unprimeable number, because it can be changed into a prime (18100619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6562 + ... + 8902.

Almost surely, 2^18100612 is an apocalyptic number.

It is an amenable number.

18100612 is a deficient number, since it is larger than the sum of its proper divisors (13605384).

18100612 is a wasteful number, since it uses less digits than its factorization.

18100612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 18100612 is about 4254.4814020042. The cubic root of 18100612 is about 262.5615251099.

Adding to 18100612 its reverse (21600181), we get a palindrome (39700793).

The spelling of 18100612 in words is "eighteen million, one hundred thousand, six hundred twelve".