168903161 has 8 divisors (see below), whose sum is σ = 193124544. Its totient is φ = 144704880.

The previous prime is 168903139. The next prime is 168903169. The reversal of 168903161 is 161309861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168903161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168903169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14786 + ... + 23588.

It is an arithmetic number, because the mean of its divisors is an integer number (24140568).

Almost surely, 2^168903161 is an apocalyptic number.

It is an amenable number.

168903161 is a deficient number, since it is larger than the sum of its proper divisors (24221383).

168903161 is an equidigital number, since it uses as much as digits as its factorization.

168903161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 168903161 is about 12996.2748893673. The cubic root of 168903161 is about 552.7718594112.

The spelling of 168903161 in words is "one hundred sixty-eight million, nine hundred three thousand, one hundred sixty-one".