18848413 has 2 divisors, whose sum is σ = 18848414. Its totient is φ = 18848412.

The previous prime is 18848377. The next prime is 18848447. The reversal of 18848413 is 31484881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11108889 + 7739524 = 3333^2 + 2782^2 .

It is a cyclic number.

It is not a de Polignac number, because 18848413 - 2⁹ = 18847901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18848483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9424206 + 9424207.

It is an arithmetic number, because the mean of its divisors is an integer number (9424207).

Almost surely, 2^18848413 is an apocalyptic number.

It is an amenable number.

18848413 is a deficient number, since it is larger than the sum of its proper divisors (1).

18848413 is an equidigital number, since it uses as much as digits as its factorization.

18848413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 37.

The square root of 18848413 is about 4341.4759011193. The cubic root of 18848413 is about 266.1286288779.

The spelling of 18848413 in words is "eighteen million, eight hundred forty-eight thousand, four hundred thirteen".