133168378 has 64 divisors (see below), whose sum is σ = 260064000. Its totient is φ = 50803200.

The previous prime is 133168333. The next prime is 133168393. The reversal of 133168378 is 873861331.

It is a self number, because there is not a number n which added to its sum of digits gives 133168378.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221278 + ... + 221878.

It is an arithmetic number, because the mean of its divisors is an integer number (4063500).

Almost surely, 2^133168378 is an apocalyptic number.

133168378 is a deficient number, since it is larger than the sum of its proper divisors (126895622).

133168378 is a wasteful number, since it uses less digits than its factorization.

133168378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 646 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 133168378 is about 11539.8603977691. The cubic root of 133168378 is about 510.6621899417.

The spelling of 133168378 in words is "one hundred thirty-three million, one hundred sixty-eight thousand, three hundred seventy-eight".