9145959091 has 2 divisors, whose sum is σ = 9145959092. Its totient is φ = 9145959090.

The previous prime is 9145959061. The next prime is 9145959101. The reversal of 9145959091 is 1909595419.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9145959091 - 2⁵ = 9145959059 is a prime.

It is not a weakly prime, because it can be changed into another prime (9145959041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4572979545 + 4572979546.

It is an arithmetic number, because the mean of its divisors is an integer number (4572979546).

Almost surely, 2^9145959091 is an apocalyptic number.

9145959091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9145959091 is an equidigital number, since it uses as much as digits as its factorization.

9145959091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 656100, while the sum is 52.

The square root of 9145959091 is about 95634.5078462790. The cubic root of 9145959091 is about 2091.2682862382.

The spelling of 9145959091 in words is "nine billion, one hundred forty-five million, nine hundred fifty-nine thousand, ninety-one".