166161876 has 48 divisors (see below), whose sum is σ = 416678976. Its totient is φ = 51346944.

The previous prime is 166161871. The next prime is 166161881. The reversal of 166161876 is 678161661.

It is an interprime number because it is at equal distance from previous prime (166161871) and next prime (166161881).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166161871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7590 + ... + 19746.

It is an arithmetic number, because the mean of its divisors is an integer number (8680812).

Almost surely, 2^166161876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166161876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208339488).

166161876 is an abundant number, since it is smaller than the sum of its proper divisors (250517100).

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

166161876 is a wasteful number, since it uses less digits than its factorization.

166161876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12248 (or 12246 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 166161876 is about 12890.3792031111. The cubic root of 166161876 is about 549.7650522669.

The spelling of 166161876 in words is "one hundred sixty-six million, one hundred sixty-one thousand, eight hundred seventy-six".