168994156 has 24 divisors (see below), whose sum is σ = 313667424. Its totient is φ = 79495680.

The previous prime is 168994153. The next prime is 168994159. The reversal of 168994156 is 651499861.

It is an interprime number because it is at equal distance from previous prime (168994153) and next prime (168994159).

It is not an unprimeable number, because it can be changed into a prime (168994153) 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, 9445 + ... + 20668.

It is an arithmetic number, because the mean of its divisors is an integer number (13069476).

Almost surely, 2^168994156 is an apocalyptic number.

It is an amenable number.

168994156 is a deficient number, since it is larger than the sum of its proper divisors (144673268).

168994156 is a wasteful number, since it uses less digits than its factorization.

168994156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30201 (or 30199 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 168994156 is about 12999.7752288261. The cubic root of 168994156 is about 552.8711084818.

The spelling of 168994156 in words is "one hundred sixty-eight million, nine hundred ninety-four thousand, one hundred fifty-six".