166251516 has 12 divisors (see below), whose sum is σ = 387920232. Its totient is φ = 55417168.

The previous prime is 166251511. The next prime is 166251559. The reversal of 166251516 is 615152661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166251511) 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 3 ways as a sum of consecutive naturals, for example, 6927135 + ... + 6927158.

It is an arithmetic number, because the mean of its divisors is an integer number (32326686).

Almost surely, 2^166251516 is an apocalyptic number.

It is an amenable number.

166251516 is an abundant number, since it is smaller than the sum of its proper divisors (221668716).

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

166251516 is a wasteful number, since it uses less digits than its factorization.

166251516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854300 (or 13854298 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 166251516 is about 12893.8557460521. The cubic root of 166251516 is about 549.8638957987.

The spelling of 166251516 in words is "one hundred sixty-six million, two hundred fifty-one thousand, five hundred sixteen".