13618373 has 2 divisors, whose sum is σ = 13618374. Its totient is φ = 13618372.

The previous prime is 13618357. The next prime is 13618399. The reversal of 13618373 is 37381631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11607649 + 2010724 = 3407^2 + 1418^2 .

It is a cyclic number.

It is not a de Polignac number, because 13618373 - 2⁴ = 13618357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13618303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6809186 + 6809187.

It is an arithmetic number, because the mean of its divisors is an integer number (6809187).

Almost surely, 2^13618373 is an apocalyptic number.

It is an amenable number.

13618373 is a deficient number, since it is larger than the sum of its proper divisors (1).

13618373 is an equidigital number, since it uses as much as digits as its factorization.

13618373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 13618373 is about 3690.3079817273. The cubic root of 13618373 is about 238.8040795598.

It can be divided in two parts, 1361837 and 3, that multiplied together give a triangular number (4085511 = T₂₈₅₈).

The spelling of 13618373 in words is "thirteen million, six hundred eighteen thousand, three hundred seventy-three".