18038950 has 12 divisors (see below), whose sum is σ = 33552540. Its totient is φ = 7215560.

The previous prime is 18038947. The next prime is 18038959. The reversal of 18038950 is 5983081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038959) 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, 180340 + ... + 180439.

It is an arithmetic number, because the mean of its divisors is an integer number (2796045).

Almost surely, 2^18038950 is an apocalyptic number.

18038950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18038950 is a deficient number, since it is larger than the sum of its proper divisors (15513590).

18038950 is a wasteful number, since it uses less digits than its factorization.

18038950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360791 (or 360786 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 18038950 is about 4247.2285080980. The cubic root of 18038950 is about 262.2630363418.

The spelling of 18038950 in words is "eighteen million, thirty-eight thousand, nine hundred fifty".