18168950 has 12 divisors (see below), whose sum is σ = 33794340. Its totient is φ = 7267560.

The previous prime is 18168929. The next prime is 18168967. The reversal of 18168950 is 5986181.

It is a super-2 number, since 2×18168950² = 660221488205000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181640 + ... + 181739.

It is an arithmetic number, because the mean of its divisors is an integer number (2816195).

Almost surely, 2^18168950 is an apocalyptic number.

18168950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18168950 is a deficient number, since it is larger than the sum of its proper divisors (15625390).

18168950 is a wasteful number, since it uses less digits than its factorization.

18168950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363391 (or 363386 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 18168950 is about 4262.5051319617. The cubic root of 18168950 is about 262.8915396577.

The spelling of 18168950 in words is "eighteen million, one hundred sixty-eight thousand, nine hundred fifty".