18839007 has 32 divisors (see below), whose sum is σ = 30735360. Its totient is φ = 11309760.

The previous prime is 18838999. The next prime is 18839011. The reversal of 18839007 is 70093881.

It is not a de Polignac number, because 18839007 - 2³ = 18838999 is a prime.

It is a super-3 number, since 3×18839007³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18839207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40458 + ... + 40920.

It is an arithmetic number, because the mean of its divisors is an integer number (960480).

Almost surely, 2^18839007 is an apocalyptic number.

18839007 is a deficient number, since it is larger than the sum of its proper divisors (11896353).

18839007 is a wasteful number, since it uses less digits than its factorization.

18839007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 18839007 is about 4340.3924937729. The cubic root of 18839007 is about 266.0843524288.

The spelling of 18839007 in words is "eighteen million, eight hundred thirty-nine thousand, seven".