18202012 has 12 divisors (see below), whose sum is σ = 32016600. Its totient is φ = 9054416.

The previous prime is 18202003. The next prime is 18202033. The reversal of 18202012 is 21020281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10762 + ... + 12337.

It is an arithmetic number, because the mean of its divisors is an integer number (2668050).

Almost surely, 2^18202012 is an apocalyptic number.

It is an amenable number.

18202012 is a deficient number, since it is larger than the sum of its proper divisors (13814588).

18202012 is a wasteful number, since it uses less digits than its factorization.

18202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23300 (or 23298 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 18202012 is about 4266.3816050607. The cubic root of 18202012 is about 263.0509040919.

Multiplying 18202012 by its sum of digits (16), we get a palindrome (291232192).

Adding to 18202012 its reverse (21020281), we get a palindrome (39222293).

The spelling of 18202012 in words is "eighteen million, two hundred two thousand, twelve".