91618283 has 2 divisors, whose sum is σ = 91618284. Its totient is φ = 91618282.

The previous prime is 91618273. The next prime is 91618297. The reversal of 91618283 is 38281619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91618283 - 2²⁰ = 90569707 is a prime.

It is not a weakly prime, because it can be changed into another prime (91618213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45809141 + 45809142.

It is an arithmetic number, because the mean of its divisors is an integer number (45809142).

Almost surely, 2^91618283 is an apocalyptic number.

91618283 is a deficient number, since it is larger than the sum of its proper divisors (1).

91618283 is an equidigital number, since it uses as much as digits as its factorization.

91618283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 91618283 is about 9571.7439894723. The cubic root of 91618283 is about 450.8105277005.

The spelling of 91618283 in words is "ninety-one million, six hundred eighteen thousand, two hundred eighty-three".