18622983 has 16 divisors (see below), whose sum is σ = 26438400. Its totient is φ = 11626560.

The previous prime is 18622969. The next prime is 18623009. The reversal of 18622983 is 38922681.

It is a happy number.

It is not a de Polignac number, because 18622983 - 2¹⁷ = 18491911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18622943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3238 + ... + 6908.

It is an arithmetic number, because the mean of its divisors is an integer number (1652400).

Almost surely, 2^18622983 is an apocalyptic number.

18622983 is a deficient number, since it is larger than the sum of its proper divisors (7815417).

18622983 is a wasteful number, since it uses less digits than its factorization.

18622983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782.

The product of its digits is 41472, while the sum is 39.

The square root of 18622983 is about 4315.4354357353. The cubic root of 18622983 is about 265.0633905549.

The spelling of 18622983 in words is "eighteen million, six hundred twenty-two thousand, nine hundred eighty-three".