166749136 has 20 divisors (see below), whose sum is σ = 323710432. Its totient is φ = 83210976.

The previous prime is 166749113. The next prime is 166749151. The reversal of 166749136 is 631947661.

It is a junction number, because it is equal to n+sod(n) for n = 166749092 and 166749101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1596 + ... + 18331.

Almost surely, 2^166749136 is an apocalyptic number.

166749136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166749136 is a deficient number, since it is larger than the sum of its proper divisors (156961296).

166749136 is a wasteful number, since it uses less digits than its factorization.

166749136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20458 (or 20452 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 166749136 is about 12913.1381158880. The cubic root of 166749136 is about 550.4119624282.

The spelling of 166749136 in words is "one hundred sixty-six million, seven hundred forty-nine thousand, one hundred thirty-six".