916913257 has 8 divisors (see below), whose sum is σ = 1019298560. Its totient is φ = 819078480.

The previous prime is 916913237. The next prime is 916913273. The reversal of 916913257 is 752319619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 916913257 - 2¹⁹ = 916388969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916913237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137207 + ... + 1138012.

It is an arithmetic number, because the mean of its divisors is an integer number (127412320).

Almost surely, 2^916913257 is an apocalyptic number.

It is an amenable number.

916913257 is a deficient number, since it is larger than the sum of its proper divisors (102385303).

916913257 is a wasteful number, since it uses less digits than its factorization.

916913257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275263.

The product of its digits is 102060, while the sum is 43.

The square root of 916913257 is about 30280.5755724689. The cubic root of 916913257 is about 971.4998785510.

The spelling of 916913257 in words is "nine hundred sixteen million, nine hundred thirteen thousand, two hundred fifty-seven".