160918915609 has 27 divisors (see below), whose sum is σ = 174230419509. Its totient is φ = 148600894680.

The previous prime is 160918915589. The next prime is 160918915613. The reversal of 160918915609 is 906519819061.

The square root of 160918915609 is 401147.

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

160918915609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 160918915609 - 2²¹ = 160916818457 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 160918915609.

It is not an unprimeable number, because it can be changed into a prime (160918915669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 327736854 + ... + 327737344.

Almost surely, 2^160918915609 is an apocalyptic number.

160918915609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

160918915609 is the 401147-th square number.

160918915609 is the 200574-th centered octagonal number.

It is an amenable number.

160918915609 is a deficient number, since it is larger than the sum of its proper divisors (13311503900).

160918915609 is an frugal number, since it uses more digits than its factorization.

160918915609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 55.

The spelling of 160918915609 in words is "one hundred sixty billion, nine hundred eighteen million, nine hundred fifteen thousand, six hundred nine".