916488278 has 16 divisors (see below), whose sum is σ = 1442348160. Its totient is φ = 436190400.

The previous prime is 916488263. The next prime is 916488289. The reversal of 916488278 is 872884619.

It is a happy number.

It is a super-2 number, since 2×916488278² = 1679901527422810568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117383 + ... + 124946.

It is an arithmetic number, because the mean of its divisors is an integer number (90146760).

Almost surely, 2^916488278 is an apocalyptic number.

916488278 is a deficient number, since it is larger than the sum of its proper divisors (525859882).

916488278 is a wasteful number, since it uses less digits than its factorization.

916488278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242423.

The product of its digits is 1548288, while the sum is 53.

The square root of 916488278 is about 30273.5574057625. The cubic root of 916488278 is about 971.3497622608.

The spelling of 916488278 in words is "nine hundred sixteen million, four hundred eighty-eight thousand, two hundred seventy-eight".