18329042 has 4 divisors (see below), whose sum is σ = 27493566. Its totient is φ = 9164520.

The previous prime is 18329011. The next prime is 18329083. The reversal of 18329042 is 24092381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24092381 = 659 ⋅36559.

It can be written as a sum of positive squares in only one way, i.e., 12033961 + 6295081 = 3469^2 + 2509^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18328996 and 18329014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4582259 + ... + 4582262.

Almost surely, 2^18329042 is an apocalyptic number.

18329042 is a deficient number, since it is larger than the sum of its proper divisors (9164524).

18329042 is an equidigital number, since it uses as much as digits as its factorization.

18329042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164523.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18329042 is about 4281.2430437900. The cubic root of 18329042 is about 263.6614212554.

The spelling of 18329042 in words is "eighteen million, three hundred twenty-nine thousand, forty-two".