919935157 has 2 divisors, whose sum is σ = 919935158. Its totient is φ = 919935156.

The previous prime is 919935131. The next prime is 919935193. The reversal of 919935157 is 751539919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831687921 + 88247236 = 28839^2 + 9394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-919935157 is a prime.

It is a super-2 number, since 2×919935157² = 1692561386169229298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 919935157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919932157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459967578 + 459967579.

It is an arithmetic number, because the mean of its divisors is an integer number (459967579).

Almost surely, 2^919935157 is an apocalyptic number.

It is an amenable number.

919935157 is a deficient number, since it is larger than the sum of its proper divisors (1).

919935157 is an equidigital number, since it uses as much as digits as its factorization.

919935157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 382725, while the sum is 49.

The square root of 919935157 is about 30330.4328521701. The cubic root of 919935157 is about 972.5659758352.

The spelling of 919935157 in words is "nine hundred nineteen million, nine hundred thirty-five thousand, one hundred fifty-seven".