958191497 has 2 divisors, whose sum is σ = 958191498. Its totient is φ = 958191496.

The previous prime is 958191473. The next prime is 958191499. The reversal of 958191497 is 794191859.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 930006016 + 28185481 = 30496^2 + 5309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-958191497 is a prime.

Together with 958191499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (958191499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479095748 + 479095749.

It is an arithmetic number, because the mean of its divisors is an integer number (479095749).

Almost surely, 2^958191497 is an apocalyptic number.

It is an amenable number.

958191497 is a deficient number, since it is larger than the sum of its proper divisors (1).

958191497 is an equidigital number, since it uses as much as digits as its factorization.

958191497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 53.

The square root of 958191497 is about 30954.6684201269. The cubic root of 958191497 is about 985.8649747831.

The spelling of 958191497 in words is "nine hundred fifty-eight million, one hundred ninety-one thousand, four hundred ninety-seven".