798313157 has 2 divisors, whose sum is σ = 798313158. Its totient is φ = 798313156.

The previous prime is 798313123. The next prime is 798313163. The reversal of 798313157 is 751313897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755920036 + 42393121 = 27494^2 + 6511^2 .

It is a cyclic number.

It is not a de Polignac number, because 798313157 - 2⁸ = 798312901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (798363157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399156578 + 399156579.

It is an arithmetic number, because the mean of its divisors is an integer number (399156579).

Almost surely, 2^798313157 is an apocalyptic number.

It is an amenable number.

798313157 is a deficient number, since it is larger than the sum of its proper divisors (1).

798313157 is an equidigital number, since it uses as much as digits as its factorization.

798313157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 44.

The square root of 798313157 is about 28254.4360587855. The cubic root of 798313157 is about 927.6648382930.

The spelling of 798313157 in words is "seven hundred ninety-eight million, three hundred thirteen thousand, one hundred fifty-seven".