160868781 has 16 divisors (see below), whose sum is σ = 239566720. Its totient is φ = 106686720.

The previous prime is 160868779. The next prime is 160868791. The reversal of 160868781 is 187868061.

It is not a de Polignac number, because 160868781 - 2¹ = 160868779 is a prime.

It is a super-2 number, since 2×160868781² = 51757529400851922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160868761) 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, 10225 + ... + 20646.

It is an arithmetic number, because the mean of its divisors is an integer number (14972920).

Almost surely, 2^160868781 is an apocalyptic number.

It is an amenable number.

160868781 is a deficient number, since it is larger than the sum of its proper divisors (78697939).

160868781 is a wasteful number, since it uses less digits than its factorization.

160868781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31073 (or 31067 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 160868781 is about 12683.4057334771. The cubic root of 160868781 is about 543.8643478897.

The spelling of 160868781 in words is "one hundred sixty million, eight hundred sixty-eight thousand, seven hundred eighty-one".