18876943 has 2 divisors, whose sum is σ = 18876944. Its totient is φ = 18876942.

The previous prime is 18876931. The next prime is 18876967. The reversal of 18876943 is 34967881.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18876943 - 2¹⁷ = 18745871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18876893 and 18876902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18876043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9438471 + 9438472.

It is an arithmetic number, because the mean of its divisors is an integer number (9438472).

Almost surely, 2^18876943 is an apocalyptic number.

18876943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18876943 is an equidigital number, since it uses as much as digits as its factorization.

18876943 is an evil number, because the sum of its binary digits is even.

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

The square root of 18876943 is about 4344.7604076635. The cubic root of 18876943 is about 266.2628368545.

The spelling of 18876943 in words is "eighteen million, eight hundred seventy-six thousand, nine hundred forty-three".