18659950 has 12 divisors (see below), whose sum is σ = 34707600. Its totient is φ = 7463960.

The previous prime is 18659947. The next prime is 18659959. The reversal of 18659950 is 5995681.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18659897 and 18659906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18659959) 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, 186550 + ... + 186649.

It is an arithmetic number, because the mean of its divisors is an integer number (2892300).

Almost surely, 2^18659950 is an apocalyptic number.

18659950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18659950 is a deficient number, since it is larger than the sum of its proper divisors (16047650).

18659950 is a wasteful number, since it uses less digits than its factorization.

18659950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373211 (or 373206 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 18659950 is about 4319.7164258780. The cubic root of 18659950 is about 265.2386600418.

The spelling of 18659950 in words is "eighteen million, six hundred fifty-nine thousand, nine hundred fifty".