18883013 has 2 divisors, whose sum is σ = 18883014. Its totient is φ = 18883012.

The previous prime is 18882991. The next prime is 18883043. The reversal of 18883013 is 31038881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16265089 + 2617924 = 4033^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 18883013 - 2⁶ = 18882949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18883043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9441506 + 9441507.

It is an arithmetic number, because the mean of its divisors is an integer number (9441507).

Almost surely, 2^18883013 is an apocalyptic number.

It is an amenable number.

18883013 is a deficient number, since it is larger than the sum of its proper divisors (1).

18883013 is an equidigital number, since it uses as much as digits as its factorization.

18883013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18883013 is about 4345.4588940640. The cubic root of 18883013 is about 266.2913732939.

The spelling of 18883013 in words is "eighteen million, eight hundred eighty-three thousand, thirteen".