18938482 has 4 divisors (see below), whose sum is σ = 28407726. Its totient is φ = 9469240.

The previous prime is 18938477. The next prime is 18938501. The reversal of 18938482 is 28483981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28483981 = 1483 ⋅19207.

It can be written as a sum of positive squares in only one way, i.e., 15139881 + 3798601 = 3891^2 + 1949^2 .

It is a super-2 number, since 2×18938482² = 717332200928648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4734619 + ... + 4734622.

Almost surely, 2^18938482 is an apocalyptic number.

18938482 is a deficient number, since it is larger than the sum of its proper divisors (9469244).

18938482 is an equidigital number, since it uses as much as digits as its factorization.

18938482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9469243.

The product of its digits is 110592, while the sum is 43.

The square root of 18938482 is about 4351.8366237716. The cubic root of 18938482 is about 266.5518627351.

The spelling of 18938482 in words is "eighteen million, nine hundred thirty-eight thousand, four hundred eighty-two".