168737961 has 16 divisors (see below), whose sum is σ = 260748288. Its totient is φ = 95062800.

The previous prime is 168737957. The next prime is 168737981. The reversal of 168737961 is 169737861.

It is a happy number.

168737961 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 168737961 - 2² = 168737957 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168737961.

It is not an unprimeable number, because it can be changed into a prime (168737941) 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, 55095 + ... + 58076.

It is an arithmetic number, because the mean of its divisors is an integer number (16296768).

Almost surely, 2^168737961 is an apocalyptic number.

It is an amenable number.

168737961 is a deficient number, since it is larger than the sum of its proper divisors (92010327).

168737961 is a wasteful number, since it uses less digits than its factorization.

168737961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113252.

The product of its digits is 381024, while the sum is 48.

The square root of 168737961 is about 12989.9176671756. The cubic root of 168737961 is about 552.5915831338.

The spelling of 168737961 in words is "one hundred sixty-eight million, seven hundred thirty-seven thousand, nine hundred sixty-one".