18379933 has 12 divisors (see below), whose sum is σ = 21714048. Its totient is φ = 15422160.

The previous prime is 18379927. The next prime is 18379943. The reversal of 18379933 is 33997381.

It is not a de Polignac number, because 18379933 - 2⁵ = 18379901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18379933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18379913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3085 + ... + 6802.

It is an arithmetic number, because the mean of its divisors is an integer number (1809504).

Almost surely, 2^18379933 is an apocalyptic number.

18379933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18379933 is a deficient number, since it is larger than the sum of its proper divisors (3334115).

18379933 is a wasteful number, since it uses less digits than its factorization.

18379933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9924 (or 9911 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 18379933 is about 4287.1824080624. The cubic root of 18379933 is about 263.9052163949.

The spelling of 18379933 in words is "eighteen million, three hundred seventy-nine thousand, nine hundred thirty-three".