18937814 has 12 divisors (see below), whose sum is σ = 33044724. Its totient is φ = 8116164.

The previous prime is 18937799. The next prime is 18937817. The reversal of 18937814 is 41873981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18937817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96524 + ... + 96719.

It is an arithmetic number, because the mean of its divisors is an integer number (2753727).

Almost surely, 2^18937814 is an apocalyptic number.

18937814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18937814 is a deficient number, since it is larger than the sum of its proper divisors (14106910).

18937814 is a wasteful number, since it uses less digits than its factorization.

18937814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193259 (or 193252 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 18937814 is about 4351.7598738901. The cubic root of 18937814 is about 266.5487287504.

The spelling of 18937814 in words is "eighteen million, nine hundred thirty-seven thousand, eight hundred fourteen".