18809950 has 12 divisors (see below), whose sum is σ = 34986600. Its totient is φ = 7523960.

The previous prime is 18809941. The next prime is 18809969. The reversal of 18809950 is 5990881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188050 + ... + 188149.

It is an arithmetic number, because the mean of its divisors is an integer number (2915550).

Almost surely, 2^18809950 is an apocalyptic number.

18809950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18809950 is a deficient number, since it is larger than the sum of its proper divisors (16176650).

18809950 is a wasteful number, since it uses less digits than its factorization.

18809950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376211 (or 376206 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 18809950 is about 4337.0439241493. The cubic root of 18809950 is about 265.9474805389.

The spelling of 18809950 in words is "eighteen million, eight hundred nine thousand, nine hundred fifty".