387172166 has 8 divisors (see below), whose sum is σ = 582377040. Its totient is φ = 193046488.

The previous prime is 387172151. The next prime is 387172183. The reversal of 387172166 is 661271783.

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

It is a super-2 number, since 2×387172166² = 299804572250263112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268901 + ... + 270336.

It is an arithmetic number, because the mean of its divisors is an integer number (72797130).

Almost surely, 2^387172166 is an apocalyptic number.

387172166 is a deficient number, since it is larger than the sum of its proper divisors (195204874).

387172166 is a wasteful number, since it uses less digits than its factorization.

387172166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539598.

The product of its digits is 84672, while the sum is 41.

The square root of 387172166 is about 19676.6909311500. The cubic root of 387172166 is about 728.8442121989.

The spelling of 387172166 in words is "three hundred eighty-seven million, one hundred seventy-two thousand, one hundred sixty-six".