916657893389 has 4 divisors (see below), whose sum is σ = 1047609021024. Its totient is φ = 785706765756.

The previous prime is 916657893379. The next prime is 916657893397. The reversal of 916657893389 is 983398756619.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983398756619 = 2633 ⋅373489843.

It is a cyclic number.

It is not a de Polignac number, because 916657893389 - 2²⁰ = 916656844813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916657893329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65475563807 + ... + 65475563820.

It is an arithmetic number, because the mean of its divisors is an integer number (261902255256).

Almost surely, 2^916657893389 is an apocalyptic number.

It is an amenable number.

916657893389 is a deficient number, since it is larger than the sum of its proper divisors (130951127635).

916657893389 is a wasteful number, since it uses less digits than its factorization.

916657893389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130951127634.

The product of its digits is 529079040, while the sum is 74.

The spelling of 916657893389 in words is "nine hundred sixteen billion, six hundred fifty-seven million, eight hundred ninety-three thousand, three hundred eighty-nine".