18690083 has 4 divisors (see below), whose sum is σ = 18712848. Its totient is φ = 18667320.

The previous prime is 18690059. The next prime is 18690097. The reversal of 18690083 is 38009681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38009681 = 223 ⋅170447.

It is a cyclic number.

It is not a de Polignac number, because 18690083 - 2⁶ = 18690019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18690043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10103 + ... + 11808.

It is an arithmetic number, because the mean of its divisors is an integer number (4678212).

Almost surely, 2^18690083 is an apocalyptic number.

18690083 is a deficient number, since it is larger than the sum of its proper divisors (22765).

18690083 is an equidigital number, since it uses as much as digits as its factorization.

18690083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22764.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18690083 is about 4323.2028636186. The cubic root of 18690083 is about 265.3813567122.

The spelling of 18690083 in words is "eighteen million, six hundred ninety thousand, eighty-three".