910168561 has 3 divisors (see below), whose sum is σ = 910198731. Its totient is φ = 910138392.

The previous prime is 910168549. The next prime is 910168591. The reversal of 910168561 is 165861019.

The square root of 910168561 is 30169.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 165861019 = 43 ⋅3857233.

It can be written as a sum of positive squares in only one way, i.e., 527574961 + 382593600 = 22969^2 + 19560^2 .

It is not a de Polignac number, because 910168561 - 2⁷ = 910168433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 910168561.

It is not an unprimeable number, because it can be changed into a prime (910168541) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15085 + ... + 45253.

It is an arithmetic number, because the mean of its divisors is an integer number (303399577).

Almost surely, 2^910168561 is an apocalyptic number.

910168561 is the 30169-th square number.

910168561 is the 15085-th centered octagonal number.

It is an amenable number.

910168561 is a deficient number, since it is larger than the sum of its proper divisors (30170).

910168561 is an frugal number, since it uses more digits than its factorization.

910168561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60338 (or 30169 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The cubic root of 910168561 is about 969.1119377602. Note that the first 3 decimals are identical.

The spelling of 910168561 in words is "nine hundred ten million, one hundred sixty-eight thousand, five hundred sixty-one".