168969861 has 32 divisors (see below), whose sum is σ = 260467200. Its totient is φ = 108164160.

The previous prime is 168969859. The next prime is 168969881.

168969861 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 168969861 - 2¹ = 168969859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168969798 and 168969807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168969881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77851 + ... + 79991.

It is an arithmetic number, because the mean of its divisors is an integer number (8139600).

Almost surely, 2^168969861 is an apocalyptic number.

It is an amenable number.

168969861 is a deficient number, since it is larger than the sum of its proper divisors (91497339).

168969861 is a wasteful number, since it uses less digits than its factorization.

168969861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2260 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 168969861 is about 12998.8407560059. The cubic root of 168969861 is about 552.8446131922.

The spelling of 168969861 in words is "one hundred sixty-eight million, nine hundred sixty-nine thousand, eight hundred sixty-one".