8493877157 has 2 divisors, whose sum is σ = 8493877158. Its totient is φ = 8493877156.

The previous prime is 8493877153. The next prime is 8493877159. The reversal of 8493877157 is 7517783948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8402655556 + 91221601 = 91666^2 + 9551^2 .

It is a cyclic number.

It is not a de Polignac number, because 8493877157 - 2² = 8493877153 is a prime.

Together with 8493877159, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8493877096 and 8493877105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8493877153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4246938578 + 4246938579.

It is an arithmetic number, because the mean of its divisors is an integer number (4246938579).

Almost surely, 2^8493877157 is an apocalyptic number.

It is an amenable number.

8493877157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8493877157 is an equidigital number, since it uses as much as digits as its factorization.

8493877157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11854080, while the sum is 59.

The square root of 8493877157 is about 92162.2328125789. The cubic root of 8493877157 is about 2040.3374071062.

The spelling of 8493877157 in words is "eight billion, four hundred ninety-three million, eight hundred seventy-seven thousand, one hundred fifty-seven".