18883913 has 2 divisors, whose sum is σ = 18883914. Its totient is φ = 18883912.

The previous prime is 18883873. The next prime is 18883919. The reversal of 18883913 is 31938881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11744329 + 7139584 = 3427^2 + 2672^2 .

It is a cyclic number.

It is not a de Polignac number, because 18883913 - 2⁶ = 18883849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18883919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9441956 + 9441957.

It is an arithmetic number, because the mean of its divisors is an integer number (9441957).

Almost surely, 2^18883913 is an apocalyptic number.

It is an amenable number.

18883913 is a deficient number, since it is larger than the sum of its proper divisors (1).

18883913 is an equidigital number, since it uses as much as digits as its factorization.

18883913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 18883913 is about 4345.5624492118. The cubic root of 18883913 is about 266.2956038763.

The spelling of 18883913 in words is "eighteen million, eight hundred eighty-three thousand, nine hundred thirteen".