18046491479 has 8 divisors (see below), whose sum is σ = 19236768000. Its totient is φ = 16880261112.

The previous prime is 18046491451. The next prime is 18046491509. The reversal of 18046491479 is 97419464081.

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 18046491479 - 2⁸ = 18046491223 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 18046491479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18046490479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6009989 + ... + 6012990.

It is an arithmetic number, because the mean of its divisors is an integer number (2404596000).

Almost surely, 2^18046491479 is an apocalyptic number.

18046491479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18046491479 is a deficient number, since it is larger than the sum of its proper divisors (1190276521).

18046491479 is a wasteful number, since it uses less digits than its factorization.

18046491479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12023077.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 18046491479 in words is "eighteen billion, forty-six million, four hundred ninety-one thousand, four hundred seventy-nine".