1172160491 has 2 divisors, whose sum is σ = 1172160492. Its totient is φ = 1172160490.

The previous prime is 1172160487. The next prime is 1172160503. The reversal of 1172160491 is 1940612711.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1940612711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1172160491 - 2² = 1172160487 is a prime.

It is a super-2 number, since 2×1172160491² = 2747920433322722162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1172160991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586080245 + 586080246.

It is an arithmetic number, because the mean of its divisors is an integer number (586080246).

Almost surely, 2^1172160491 is an apocalyptic number.

1172160491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172160491 is an equidigital number, since it uses as much as digits as its factorization.

1172160491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1172160491 is about 34236.8294530904. The cubic root of 1172160491 is about 1054.3764397637.

The spelling of 1172160491 in words is "one billion, one hundred seventy-two million, one hundred sixty thousand, four hundred ninety-one".