916161566 has 4 divisors (see below), whose sum is σ = 1374242352. Its totient is φ = 458080782.

The previous prime is 916161563. The next prime is 916161577. The reversal of 916161566 is 665161619.

916161566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665161619 = 73 ⋅9111803.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916161563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229040390 + ... + 229040393.

It is an arithmetic number, because the mean of its divisors is an integer number (343560588).

Almost surely, 2^916161566 is an apocalyptic number.

916161566 is a deficient number, since it is larger than the sum of its proper divisors (458080786).

916161566 is a wasteful number, since it uses less digits than its factorization.

916161566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458080785.

The product of its digits is 58320, while the sum is 41.

The square root of 916161566 is about 30268.1609286062. The cubic root of 916161566 is about 971.2343254903.

The spelling of 916161566 in words is "nine hundred sixteen million, one hundred sixty-one thousand, five hundred sixty-six".