18816034 has 4 divisors (see below), whose sum is σ = 28224054. Its totient is φ = 9408016.

The previous prime is 18816029. The next prime is 18816073. The reversal of 18816034 is 43061881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43061881 = 593 ⋅72617.

It can be written as a sum of positive squares in only one way, i.e., 16785409 + 2030625 = 4097^2 + 1425^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18815987 and 18816005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4704007 + ... + 4704010.

Almost surely, 2^18816034 is an apocalyptic number.

18816034 is a deficient number, since it is larger than the sum of its proper divisors (9408020).

18816034 is an equidigital number, since it uses as much as digits as its factorization.

18816034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9408019.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18816034 is about 4337.7452668408. The cubic root of 18816034 is about 265.9761506497.

The spelling of 18816034 in words is "eighteen million, eight hundred sixteen thousand, thirty-four".