916643111 has 8 divisors (see below), whose sum is σ = 972194400. Its totient is φ = 861273088.

The previous prime is 916643053. The next prime is 916643149. The reversal of 916643111 is 111346619.

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 916643111 - 2¹⁰ = 916642087 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 (916643711) 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 in 7 ways as a sum of consecutive naturals, for example, 34826 + ... + 55191.

It is an arithmetic number, because the mean of its divisors is an integer number (121524300).

Almost surely, 2^916643111 is an apocalyptic number.

916643111 is a deficient number, since it is larger than the sum of its proper divisors (55551289).

916643111 is a wasteful number, since it uses less digits than its factorization.

916643111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90633.

The product of its digits is 3888, while the sum is 32.

The square root of 916643111 is about 30276.1145294438. The cubic root of 916643111 is about 971.4044596431.

The spelling of 916643111 in words is "nine hundred sixteen million, six hundred forty-three thousand, one hundred eleven".