18378801713 has 2 divisors, whose sum is σ = 18378801714. Its totient is φ = 18378801712.

The previous prime is 18378801709. The next prime is 18378801757. The reversal of 18378801713 is 31710887381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13278413824 + 5100387889 = 115232^2 + 71417^2 .

It is a cyclic number.

It is not a de Polignac number, because 18378801713 - 2² = 18378801709 is a prime.

It is not a weakly prime, because it can be changed into another prime (18378801703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9189400856 + 9189400857.

It is an arithmetic number, because the mean of its divisors is an integer number (9189400857).

Almost surely, 2^18378801713 is an apocalyptic number.

It is an amenable number.

18378801713 is a deficient number, since it is larger than the sum of its proper divisors (1).

18378801713 is an equidigital number, since it uses as much as digits as its factorization.

18378801713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 18378801713 in words is "eighteen billion, three hundred seventy-eight million, eight hundred one thousand, seven hundred thirteen".