18095979 has 8 divisors (see below), whose sum is σ = 26321472. Its totient is φ = 10967240.

The previous prime is 18095969. The next prime is 18095981. The reversal of 18095979 is 97959081.

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 18095979 - 2¹¹ = 18093931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18095929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274149 + ... + 274214.

It is an arithmetic number, because the mean of its divisors is an integer number (3290184).

Almost surely, 2^18095979 is an apocalyptic number.

18095979 is a deficient number, since it is larger than the sum of its proper divisors (8225493).

18095979 is a wasteful number, since it uses less digits than its factorization.

18095979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548377.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 18095979 is about 4253.9368824655. The cubic root of 18095979 is about 262.5391216069.

The spelling of 18095979 in words is "eighteen million, ninety-five thousand, nine hundred seventy-nine".