18980907 has 12 divisors (see below), whose sum is σ = 27818280. Its totient is φ = 11503360.

The previous prime is 18980893. The next prime is 18980947. The reversal of 18980907 is 70908981.

It is not a de Polignac number, because 18980907 - 2⁷ = 18980779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18980947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25782 + ... + 26507.

It is an arithmetic number, because the mean of its divisors is an integer number (2318190).

Almost surely, 2^18980907 is an apocalyptic number.

18980907 is a deficient number, since it is larger than the sum of its proper divisors (8837373).

18980907 is a wasteful number, since it uses less digits than its factorization.

18980907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52314 (or 52303 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 18980907 is about 4356.7082757513. The cubic root of 18980907 is about 266.7507528232.

The spelling of 18980907 in words is "eighteen million, nine hundred eighty thousand, nine hundred seven".