975116491 has 2 divisors, whose sum is σ = 975116492. Its totient is φ = 975116490.

The previous prime is 975116479. The next prime is 975116509. The reversal of 975116491 is 194611579.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 975116491 - 2⁹ = 975115979 is a prime.

It is equal to p_49645960 and since 975116491 and 49645960 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (975116591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487558245 + 487558246.

It is an arithmetic number, because the mean of its divisors is an integer number (487558246).

Almost surely, 2^975116491 is an apocalyptic number.

975116491 is a deficient number, since it is larger than the sum of its proper divisors (1).

975116491 is an equidigital number, since it uses as much as digits as its factorization.

975116491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 975116491 is about 31226.8552851548. The cubic root of 975116491 is about 991.6357310627.

The spelling of 975116491 in words is "nine hundred seventy-five million, one hundred sixteen thousand, four hundred ninety-one".