8920318457 has 2 divisors, whose sum is σ = 8920318458. Its totient is φ = 8920318456.

The previous prime is 8920318453. The next prime is 8920318487. The reversal of 8920318457 is 7548130298.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8355970921 + 564347536 = 91411^2 + 23756^2 .

It is a cyclic number.

It is not a de Polignac number, because 8920318457 - 2² = 8920318453 is a prime.

It is not a weakly prime, because it can be changed into another prime (8920318453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4460159228 + 4460159229.

It is an arithmetic number, because the mean of its divisors is an integer number (4460159229).

Almost surely, 2^8920318457 is an apocalyptic number.

It is an amenable number.

8920318457 is a deficient number, since it is larger than the sum of its proper divisors (1).

8920318457 is an equidigital number, since it uses as much as digits as its factorization.

8920318457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 8920318457 is about 94447.4375353826. The cubic root of 8920318457 is about 2073.9269397906.

The spelling of 8920318457 in words is "eight billion, nine hundred twenty million, three hundred eighteen thousand, four hundred fifty-seven".