18669996 has 18 divisors (see below), whose sum is σ = 47193692. Its totient is φ = 6223320.

The previous prime is 18669979. The next prime is 18670007. The reversal of 18669996 is 69996681.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×18669996³ (a number of 23 digits) contains 333 as substring.

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, 259270 + ... + 259341.

Almost surely, 2^18669996 is an apocalyptic number.

It is an amenable number.

18669996 is an abundant number, since it is smaller than the sum of its proper divisors (28523696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18669996 is a wasteful number, since it uses less digits than its factorization.

18669996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518621 (or 518616 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 18669996 is about 4320.8790772249. The cubic root of 18669996 is about 265.2862505506.

The spelling of 18669996 in words is "eighteen million, six hundred sixty-nine thousand, nine hundred ninety-six".