18502012 has 24 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 9069360.

The previous prime is 18501937. The next prime is 18502013. The reversal of 18502012 is 21020581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18502013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59337 + ... + 59647.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^18502012 is an apocalyptic number.

It is an amenable number.

18502012 is a deficient number, since it is larger than the sum of its proper divisors (14520068).

18502012 is a wasteful number, since it uses less digits than its factorization.

18502012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 18502012 is about 4301.3965174115. The cubic root of 18502012 is about 264.4882112329.

Adding to 18502012 its reverse (21020581), we get a palindrome (39522593).

Subtracting 18502012 from its reverse (21020581), we obtain a square (2518569 = 1587²).

The spelling of 18502012 in words is "eighteen million, five hundred two thousand, twelve".