18120995 has 8 divisors (see below), whose sum is σ = 21917184. Its totient is φ = 14382144.

The previous prime is 18120989. The next prime is 18121039. The reversal of 18120995 is 59902181.

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 18120995 - 2⁴ = 18120979 is a prime.

It is a Duffinian 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, 13634 + ... + 14903.

It is an arithmetic number, because the mean of its divisors is an integer number (2739648).

Almost surely, 2^18120995 is an apocalyptic number.

18120995 is a deficient number, since it is larger than the sum of its proper divisors (3796189).

18120995 is a wasteful number, since it uses less digits than its factorization.

18120995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28669.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 18120995 is about 4256.8762020994. The cubic root of 18120995 is about 262.6600445034.

The spelling of 18120995 in words is "eighteen million, one hundred twenty thousand, nine hundred ninety-five".