591149491 has 2 divisors, whose sum is σ = 591149492. Its totient is φ = 591149490.

The previous prime is 591149459. The next prime is 591149501. The reversal of 591149491 is 194941195.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 591149491 - 2⁵ = 591149459 is a prime.

It is a super-3 number, since 3×591149491³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (591149441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295574745 + 295574746.

It is an arithmetic number, because the mean of its divisors is an integer number (295574746).

Almost surely, 2^591149491 is an apocalyptic number.

591149491 is a deficient number, since it is larger than the sum of its proper divisors (1).

591149491 is an equidigital number, since it uses as much as digits as its factorization.

591149491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The square root of 591149491 is about 24313.5659869136. The cubic root of 591149491 is about 839.2649896030.

The spelling of 591149491 in words is "five hundred ninety-one million, one hundred forty-nine thousand, four hundred ninety-one".