9091691361 has 24 divisors (see below), whose sum is σ = 13375776960. Its totient is φ = 5949568800.

The previous prime is 9091691339. The next prime is 9091691383. The reversal of 9091691361 is 1631961909.

It is an interprime number because it is at equal distance from previous prime (9091691339) and next prime (9091691383).

It is not a de Polignac number, because 9091691361 - 2¹⁹ = 9091167073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9091691561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115266 + ... + 177396.

It is an arithmetic number, because the mean of its divisors is an integer number (557324040).

Almost surely, 2^9091691361 is an apocalyptic number.

It is an amenable number.

9091691361 is a deficient number, since it is larger than the sum of its proper divisors (4284085599).

9091691361 is a wasteful number, since it uses less digits than its factorization.

9091691361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62437 (or 62434 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 9091691361 is about 95350.3610952785. The cubic root of 9091691361 is about 2087.1238844575.

The spelling of 9091691361 in words is "nine billion, ninety-one million, six hundred ninety-one thousand, three hundred sixty-one".