18332949 has 4 divisors (see below), whose sum is σ = 24443936. Its totient is φ = 12221964.

The previous prime is 18332933. The next prime is 18332971. The reversal of 18332949 is 94923381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18332949 - 2⁴ = 18332933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18332999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055489 + ... + 3055494.

It is an arithmetic number, because the mean of its divisors is an integer number (6110984).

Almost surely, 2^18332949 is an apocalyptic number.

It is an amenable number.

18332949 is a deficient number, since it is larger than the sum of its proper divisors (6110987).

18332949 is an equidigital number, since it uses as much as digits as its factorization.

18332949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110986.

The product of its digits is 46656, while the sum is 39.

The square root of 18332949 is about 4281.6993121890. The cubic root of 18332949 is about 263.6801538581.

The spelling of 18332949 in words is "eighteen million, three hundred thirty-two thousand, nine hundred forty-nine".