18083507 has 8 divisors (see below), whose sum is σ = 19592160. Its totient is φ = 16690440.

The previous prime is 18083479. The next prime is 18083519. The reversal of 18083507 is 70538081.

It is not a de Polignac number, because 18083507 - 2²⁰ = 17034931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18083537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919 + ... + 6312.

It is an arithmetic number, because the mean of its divisors is an integer number (2449020).

Almost surely, 2^18083507 is an apocalyptic number.

18083507 is a deficient number, since it is larger than the sum of its proper divisors (1508653).

18083507 is an frugal number, since it uses more digits than its factorization.

18083507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8270 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18083507 is about 4252.4706936086. The cubic root of 18083507 is about 262.4787925422.

The spelling of 18083507 in words is "eighteen million, eighty-three thousand, five hundred seven".