18082645 has 16 divisors (see below), whose sum is σ = 26258688. Its totient is φ = 11669760.

The previous prime is 18082637. The next prime is 18082651. The reversal of 18082645 is 54628081.

It is not a de Polignac number, because 18082645 - 2³ = 18082637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18082645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14601 + ... + 15790.

It is an arithmetic number, because the mean of its divisors is an integer number (1641168).

Almost surely, 2^18082645 is an apocalyptic number.

It is an amenable number.

18082645 is a deficient number, since it is larger than the sum of its proper divisors (8176043).

18082645 is a wasteful number, since it uses less digits than its factorization.

18082645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30420.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18082645 is about 4252.3693395565. The cubic root of 18082645 is about 262.4746218852.

The spelling of 18082645 in words is "eighteen million, eighty-two thousand, six hundred forty-five".