18990695 has 8 divisors (see below), whose sum is σ = 23219136. Its totient is φ = 14905696.

The previous prime is 18990689. The next prime is 18990707. The reversal of 18990695 is 59609981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18990695 - 2¹⁰ = 18989671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35567 + ... + 36096.

It is an arithmetic number, because the mean of its divisors is an integer number (2902392).

Almost surely, 2^18990695 is an apocalyptic number.

18990695 is a deficient number, since it is larger than the sum of its proper divisors (4228441).

18990695 is an equidigital number, since it uses as much as digits as its factorization.

18990695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71721.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 18990695 is about 4357.8314561259. The cubic root of 18990695 is about 266.7965972726.

The spelling of 18990695 in words is "eighteen million, nine hundred ninety thousand, six hundred ninety-five".