916515923 has 2 divisors, whose sum is σ = 916515924. Its totient is φ = 916515922.

The previous prime is 916515907. The next prime is 916515931. The reversal of 916515923 is 329515619.

It is a happy number.

916515923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (329515619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 916515923 - 2⁴ = 916515907 is a prime.

It is a super-2 number, since 2×916515923² = 1680002874225083858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (916515973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458257961 + 458257962.

It is an arithmetic number, because the mean of its divisors is an integer number (458257962).

Almost surely, 2^916515923 is an apocalyptic number.

916515923 is a deficient number, since it is larger than the sum of its proper divisors (1).

916515923 is an equidigital number, since it uses as much as digits as its factorization.

916515923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 41.

The square root of 916515923 is about 30274.0139888981. The cubic root of 916515923 is about 971.3595287775.

The spelling of 916515923 in words is "nine hundred sixteen million, five hundred fifteen thousand, nine hundred twenty-three".