916531189 has 4 divisors (see below), whose sum is σ = 1047464224. Its totient is φ = 785598156.

The previous prime is 916531153. The next prime is 916531201. The reversal of 916531189 is 981135619.

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: 981135619 = 2903 ⋅337973.

It is not a de Polignac number, because 916531189 - 2¹⁷ = 916400117 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 (916531129) 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, 65466507 + ... + 65466520.

It is an arithmetic number, because the mean of its divisors is an integer number (261866056).

Almost surely, 2^916531189 is an apocalyptic number.

It is an amenable number.

916531189 is a deficient number, since it is larger than the sum of its proper divisors (130933035).

916531189 is a wasteful number, since it uses less digits than its factorization.

916531189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130933034.

The product of its digits is 58320, while the sum is 43.

The square root of 916531189 is about 30274.2661182728. The cubic root of 916531189 is about 971.3649219161.

The spelling of 916531189 in words is "nine hundred sixteen million, five hundred thirty-one thousand, one hundred eighty-nine".