980162657 has 2 divisors, whose sum is σ = 980162658. Its totient is φ = 980162656.

The previous prime is 980162647. The next prime is 980162663. The reversal of 980162657 is 756261089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511483456 + 468679201 = 22616^2 + 21649^2 .

It is a cyclic number.

It is not a de Polignac number, because 980162657 - 2²⁸ = 711727201 is a prime.

It is not a weakly prime, because it can be changed into another prime (980162647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490081328 + 490081329.

It is an arithmetic number, because the mean of its divisors is an integer number (490081329).

Almost surely, 2^980162657 is an apocalyptic number.

It is an amenable number.

980162657 is a deficient number, since it is larger than the sum of its proper divisors (1).

980162657 is an equidigital number, since it uses as much as digits as its factorization.

980162657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 980162657 is about 31307.5495208424. The cubic root of 980162657 is about 993.3433395260.

The spelling of 980162657 in words is "nine hundred eighty million, one hundred sixty-two thousand, six hundred fifty-seven".