919372117 has 2 divisors, whose sum is σ = 919372118. Its totient is φ = 919372116.

The previous prime is 919372109. The next prime is 919372127. The reversal of 919372117 is 711273919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756580036 + 162792081 = 27506^2 + 12759^2 .

It is a cyclic number.

It is not a de Polignac number, because 919372117 - 2³ = 919372109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 919372117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919372127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459686058 + 459686059.

It is an arithmetic number, because the mean of its divisors is an integer number (459686059).

Almost surely, 2^919372117 is an apocalyptic number.

It is an amenable number.

919372117 is a deficient number, since it is larger than the sum of its proper divisors (1).

919372117 is an equidigital number, since it uses as much as digits as its factorization.

919372117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 40.

The square root of 919372117 is about 30321.1496648791. The cubic root of 919372117 is about 972.3675178976.

The spelling of 919372117 in words is "nine hundred nineteen million, three hundred seventy-two thousand, one hundred seventeen".