916891541 has 4 divisors (see below), whose sum is σ = 925303500. Its totient is φ = 908479584.

The previous prime is 916891501. The next prime is 916891553. The reversal of 916891541 is 145198619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145198619 = 37 ⋅3924287.

It can be written as a sum of positive squares in 2 ways, for example, as 833534641 + 83356900 = 28871^2 + 9130^2 .

It is a cyclic number.

It is not a de Polignac number, because 916891541 - 2¹⁸ = 916629397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 916891492 and 916891501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916891501) 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 3 ways as a sum of consecutive naturals, for example, 4205816 + ... + 4206033.

It is an arithmetic number, because the mean of its divisors is an integer number (231325875).

Almost surely, 2^916891541 is an apocalyptic number.

It is an amenable number.

916891541 is a deficient number, since it is larger than the sum of its proper divisors (8411959).

916891541 is a wasteful number, since it uses less digits than its factorization.

916891541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8411958.

The product of its digits is 77760, while the sum is 44.

The square root of 916891541 is about 30280.2169906360. The cubic root of 916891541 is about 971.4922088841.

The spelling of 916891541 in words is "nine hundred sixteen million, eight hundred ninety-one thousand, five hundred forty-one".