18979467 has 8 divisors (see below), whose sum is σ = 27252624. Its totient is φ = 11679648.

The previous prime is 18979453. The next prime is 18979487. The reversal of 18979467 is 76497981.

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

It is not a de Polignac number, because 18979467 - 2⁴ = 18979451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18979487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243288 + ... + 243365.

It is an arithmetic number, because the mean of its divisors is an integer number (3406578).

Almost surely, 2^18979467 is an apocalyptic number.

18979467 is a deficient number, since it is larger than the sum of its proper divisors (8273157).

18979467 is a wasteful number, since it uses less digits than its factorization.

18979467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486669.

The product of its digits is 762048, while the sum is 51.

The square root of 18979467 is about 4356.5430102319. The cubic root of 18979467 is about 266.7440069074.

The spelling of 18979467 in words is "eighteen million, nine hundred seventy-nine thousand, four hundred sixty-seven".