18412963 has 4 divisors (see below), whose sum is σ = 18426400. Its totient is φ = 18399528.

The previous prime is 18412951. The next prime is 18412981. The reversal of 18412963 is 36921481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18412963 - 2⁵ = 18412931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18412993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4395 + ... + 7492.

It is an arithmetic number, because the mean of its divisors is an integer number (4606600).

Almost surely, 2^18412963 is an apocalyptic number.

18412963 is a deficient number, since it is larger than the sum of its proper divisors (13437).

18412963 is a wasteful number, since it uses less digits than its factorization.

18412963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436.

The product of its digits is 10368, while the sum is 34.

The square root of 18412963 is about 4291.0328593475. The cubic root of 18412963 is about 264.0632070497.

The spelling of 18412963 in words is "eighteen million, four hundred twelve thousand, nine hundred sixty-three".