18749934 has 32 divisors (see below), whose sum is σ = 47619840. Its totient is φ = 5357016.

The previous prime is 18749933. The next prime is 18749959. The reversal of 18749934 is 43994781.

It is a self number, because there is not a number n which added to its sum of digits gives 18749934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18749933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24424 + ... + 25179.

It is an arithmetic number, because the mean of its divisors is an integer number (1488120).

Almost surely, 2^18749934 is an apocalyptic number.

18749934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18749934 is an abundant number, since it is smaller than the sum of its proper divisors (28869906).

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

18749934 is a wasteful number, since it uses less digits than its factorization.

18749934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49621 (or 49615 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 18749934 is about 4330.1193978919. The cubic root of 18749934 is about 265.6643305821.

It can be divided in two parts, 18749 and 934, that added together give a 9-th power (19683 = 3⁹).

The spelling of 18749934 in words is "eighteen million, seven hundred forty-nine thousand, nine hundred thirty-four".