373640166 has 24 divisors (see below), whose sum is σ = 812551584. Its totient is φ = 124085520.

The previous prime is 373640143. The next prime is 373640167. The reversal of 373640166 is 661046373.

It is a happy number.

373640166 is a `hidden beast` number, since 3 + 7 + 3 + 640 + 1 + 6 + 6 = 666.

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 373640166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373640167) 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, 33421 + ... + 43176.

It is an arithmetic number, because the mean of its divisors is an integer number (33856316).

Almost surely, 2^373640166 is an apocalyptic number.

373640166 is an abundant number, since it is smaller than the sum of its proper divisors (438911418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

373640166 is a wasteful number, since it uses less digits than its factorization.

373640166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76876 (or 76873 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 373640166 is about 19329.7740804180. The cubic root of 373640166 is about 720.2520760883.

The spelling of 373640166 in words is "three hundred seventy-three million, six hundred forty thousand, one hundred sixty-six".