166201926 has 16 divisors (see below), whose sum is σ = 362622528. Its totient is φ = 50364200.

The previous prime is 166201921. The next prime is 166201951. The reversal of 166201926 is 629102661.

It is a super-2 number, since 2×166201926² = 55246160412218952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166201921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259040 + ... + 1259171.

It is an arithmetic number, because the mean of its divisors is an integer number (22663908).

Almost surely, 2^166201926 is an apocalyptic number.

166201926 is an abundant number, since it is smaller than the sum of its proper divisors (196420602).

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

166201926 is a wasteful number, since it uses less digits than its factorization.

166201926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518227.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 166201926 is about 12891.9325936804. The cubic root of 166201926 is about 549.8092186788.

The spelling of 166201926 in words is "one hundred sixty-six million, two hundred one thousand, nine hundred twenty-six".