18476983 has 4 divisors (see below), whose sum is σ = 21116560. Its totient is φ = 15837408.

The previous prime is 18476963. The next prime is 18476993. The reversal of 18476983 is 38967481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38967481 = 7 ⋅5566783.

It is a cyclic number.

It is not a de Polignac number, because 18476983 - 2¹⁷ = 18345911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18476903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319778 + ... + 1319791.

It is an arithmetic number, because the mean of its divisors is an integer number (5279140).

Almost surely, 2^18476983 is an apocalyptic number.

18476983 is a deficient number, since it is larger than the sum of its proper divisors (2639577).

18476983 is an equidigital number, since it uses as much as digits as its factorization.

18476983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639576.

The product of its digits is 290304, while the sum is 46.

The square root of 18476983 is about 4298.4861288598. The cubic root of 18476983 is about 264.3688933493.

The spelling of 18476983 in words is "eighteen million, four hundred seventy-six thousand, nine hundred eighty-three".