18814012 has 24 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 8039280.

The previous prime is 18814007. The next prime is 18814013. The reversal of 18814012 is 21041881.

It is a super-2 number, since 2×18814012² = 707934095072288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18814013) 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, 11289 + ... + 12847.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^18814012 is an apocalyptic number.

It is an amenable number.

18814012 is an abundant number, since it is smaller than the sum of its proper divisors (18925508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18814012 is a wasteful number, since it uses less digits than its factorization.

18814012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18814012 is about 4337.5121901846. The cubic root of 18814012 is about 265.9666229061.

Adding to 18814012 its reverse (21041881), we get a palindrome (39855893).

The spelling of 18814012 in words is "eighteen million, eight hundred fourteen thousand, twelve".