18994934 has 16 divisors (see below), whose sum is σ = 32640000. Its totient is φ = 8121384.

The previous prime is 18994907. The next prime is 18994979. The reversal of 18994934 is 43949981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5627 + ... + 8345.

It is an arithmetic number, because the mean of its divisors is an integer number (2040000).

Almost surely, 2^18994934 is an apocalyptic number.

18994934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18994934 is a deficient number, since it is larger than the sum of its proper divisors (13645066).

18994934 is a wasteful number, since it uses less digits than its factorization.

18994934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227.

The product of its digits is 279936, while the sum is 47.

The square root of 18994934 is about 4358.3177947460. The cubic root of 18994934 is about 266.8164467592.

The spelling of 18994934 in words is "eighteen million, nine hundred ninety-four thousand, nine hundred thirty-four".