166431150 has 72 divisors (see below), whose sum is σ = 450086520. Its totient is φ = 44089920.

The previous prime is 166431121. The next prime is 166431191. The reversal of 166431150 is 51134661.

166431150 is a `hidden beast` number, since 1 + 6 + 643 + 1 + 15 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72216 + ... + 74484.

Almost surely, 2^166431150 is an apocalyptic number.

166431150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166431150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225043260).

166431150 is an abundant number, since it is smaller than the sum of its proper divisors (283655370).

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

166431150 is a wasteful number, since it uses less digits than its factorization.

166431150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450 (or 2442 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 166431150 is about 12900.8197413963. The cubic root of 166431150 is about 550.0618663190.

The spelling of 166431150 in words is "one hundred sixty-six million, four hundred thirty-one thousand, one hundred fifty".