18479546 has 4 divisors (see below), whose sum is σ = 27719322. Its totient is φ = 9239772.

The previous prime is 18479537. The next prime is 18479569. The reversal of 18479546 is 64597481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 6817321 = 3415^2 + 2611^2 .

It is a super-2 number, since 2×18479546² = 682987240732232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18479497 and 18479506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4619885 + ... + 4619888.

Almost surely, 2^18479546 is an apocalyptic number.

18479546 is a deficient number, since it is larger than the sum of its proper divisors (9239776).

18479546 is an equidigital number, since it uses as much as digits as its factorization.

18479546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9239775.

The product of its digits is 241920, while the sum is 44.

The square root of 18479546 is about 4298.7842467377. The cubic root of 18479546 is about 264.3811165957.

The spelling of 18479546 in words is "eighteen million, four hundred seventy-nine thousand, five hundred forty-six".