1145959691 has 2 divisors, whose sum is σ = 1145959692. Its totient is φ = 1145959690.

The previous prime is 1145959663. The next prime is 1145959721. The reversal of 1145959691 is 1969595411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145959691 - 2⁶ = 1145959627 is a prime.

It is a super-2 number, since 2×1145959691² = 2626447226793630962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145959631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572979845 + 572979846.

It is an arithmetic number, because the mean of its divisors is an integer number (572979846).

Almost surely, 2^1145959691 is an apocalyptic number.

1145959691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145959691 is an equidigital number, since it uses as much as digits as its factorization.

1145959691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 50.

The square root of 1145959691 is about 33852.0263942943. The cubic root of 1145959691 is about 1046.4611599831.

The spelling of 1145959691 in words is "one billion, one hundred forty-five million, nine hundred fifty-nine thousand, six hundred ninety-one".