168378633 has 12 divisors (see below), whose sum is σ = 244369008. Its totient is φ = 111719160.

The previous prime is 168378629. The next prime is 168378641. The reversal of 168378633 is 336873861.

168378633 is a `hidden beast` number, since 1 + 6 + 8 + 3 + 7 + 8 + 633 = 666.

It is not a de Polignac number, because 168378633 - 2² = 168378629 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (168378643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42435 + ... + 46232.

It is an arithmetic number, because the mean of its divisors is an integer number (20364084).

Almost surely, 2^168378633 is an apocalyptic number.

It is an amenable number.

168378633 is a deficient number, since it is larger than the sum of its proper divisors (75990375).

168378633 is a wasteful number, since it uses less digits than its factorization.

168378633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88884 (or 88881 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 168378633 is about 12976.0792614719. The cubic root of 168378633 is about 552.1990558881.

The spelling of 168378633 in words is "one hundred sixty-eight million, three hundred seventy-eight thousand, six hundred thirty-three".