166303988 has 6 divisors (see below), whose sum is σ = 291031986. Its totient is φ = 83151992.

The previous prime is 166303967. The next prime is 166303997. The reversal of 166303988 is 889303661.

It can be written as a sum of positive squares in only one way, i.e., 155201764 + 11102224 = 12458^2 + 3332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20787995 + ... + 20788002.

It is an arithmetic number, because the mean of its divisors is an integer number (48505331).

Almost surely, 2^166303988 is an apocalyptic number.

It is an amenable number.

166303988 is a deficient number, since it is larger than the sum of its proper divisors (124727998).

166303988 is a wasteful number, since it uses less digits than its factorization.

166303988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41576001 (or 41575999 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 166303988 is about 12895.8903531319. The cubic root of 166303988 is about 549.9217387267.

The spelling of 166303988 in words is "one hundred sixty-six million, three hundred three thousand, nine hundred eighty-eight".