166140988 has 12 divisors (see below), whose sum is σ = 313111960. Its totient is φ = 76680432.

The previous prime is 166140973. The next prime is 166141007. The reversal of 166140988 is 889041661.

It is a super-2 number, since 2×166140988² = 55205655787232288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1597458 + ... + 1597561.

Almost surely, 2^166140988 is an apocalyptic number.

It is an amenable number.

166140988 is a deficient number, since it is larger than the sum of its proper divisors (146970972).

166140988 is a wasteful number, since it uses less digits than its factorization.

166140988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195036 (or 3195034 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 166140988 is about 12889.5689609855. The cubic root of 166140988 is about 549.7420145443.

The spelling of 166140988 in words is "one hundred sixty-six million, one hundred forty thousand, nine hundred eighty-eight".