916742591 has 2 divisors, whose sum is σ = 916742592. Its totient is φ = 916742590.

The previous prime is 916742581. The next prime is 916742597. The reversal of 916742591 is 195247619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 916742591 - 2²⁶ = 849633727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916742597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458371295 + 458371296.

It is an arithmetic number, because the mean of its divisors is an integer number (458371296).

Almost surely, 2^916742591 is an apocalyptic number.

916742591 is a deficient number, since it is larger than the sum of its proper divisors (1).

916742591 is an equidigital number, since it uses as much as digits as its factorization.

916742591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 916742591 is about 30277.7573641114. The cubic root of 916742591 is about 971.4395993898.

The spelling of 916742591 in words is "nine hundred sixteen million, seven hundred forty-two thousand, five hundred ninety-one".