916531539 has 16 divisors (see below), whose sum is σ = 1523585280. Its totient is φ = 476120160.

The previous prime is 916531529. The next prime is 916531601. The reversal of 916531539 is 935135619.

It is not a de Polignac number, because 916531539 - 2⁷ = 916531411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 916531539.

It is not an unprimeable number, because it can be changed into a prime (916531529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983604 + ... + 1984065.

It is an arithmetic number, because the mean of its divisors is an integer number (95224080).

Almost surely, 2^916531539 is an apocalyptic number.

916531539 is a deficient number, since it is larger than the sum of its proper divisors (607053741).

916531539 is a wasteful number, since it uses less digits than its factorization.

916531539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967690.

The product of its digits is 109350, while the sum is 42.

The square root of 916531539 is about 30274.2718987592. The cubic root of 916531539 is about 971.3650455627.

It can be divided in two parts, 9165 and 31539, that added together give a palindrome (40704).

The spelling of 916531539 in words is "nine hundred sixteen million, five hundred thirty-one thousand, five hundred thirty-nine".