18312482 has 4 divisors (see below), whose sum is σ = 27468726. Its totient is φ = 9156240.

The previous prime is 18312457. The next prime is 18312487. The reversal of 18312482 is 28421381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28421381 = 1429 ⋅19889.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 6195121 = 3481^2 + 2489^2 .

It is not an unprimeable number, because it can be changed into a prime (18312487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4578119 + ... + 4578122.

Almost surely, 2^18312482 is an apocalyptic number.

18312482 is a deficient number, since it is larger than the sum of its proper divisors (9156244).

18312482 is an equidigital number, since it uses as much as digits as its factorization.

18312482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156243.

The product of its digits is 3072, while the sum is 29.

The square root of 18312482 is about 4279.3085890129. The cubic root of 18312482 is about 263.5819926863.

The spelling of 18312482 in words is "eighteen million, three hundred twelve thousand, four hundred eighty-two".