18497479 has 32 divisors (see below), whose sum is σ = 26320896. Its totient is φ = 12510720.

The previous prime is 18497467. The next prime is 18497489. The reversal of 18497479 is 97479481.

It is a cyclic number.

It is not a de Polignac number, because 18497479 - 2⁹ = 18496967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18497419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16474 + ... + 17560.

It is an arithmetic number, because the mean of its divisors is an integer number (822528).

Almost surely, 2^18497479 is an apocalyptic number.

18497479 is a deficient number, since it is larger than the sum of its proper divisors (7823417).

18497479 is a wasteful number, since it uses less digits than its factorization.

18497479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135.

The product of its digits is 508032, while the sum is 49.

The square root of 18497479 is about 4300.8695632395. The cubic root of 18497479 is about 264.4666095645.

The spelling of 18497479 in words is "eighteen million, four hundred ninety-seven thousand, four hundred seventy-nine".