166635492 has 48 divisors (see below), whose sum is σ = 406382592. Its totient is φ = 53091360.

The previous prime is 166635481. The next prime is 166635493. The reversal of 166635492 is 294536661.

It is not an unprimeable number, because it can be changed into a prime (166635493) 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 15 ways as a sum of consecutive naturals, for example, 20817 + ... + 27687.

It is an arithmetic number, because the mean of its divisors is an integer number (8466304).

Almost surely, 2^166635492 is an apocalyptic number.

166635492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166635492 is an abundant number, since it is smaller than the sum of its proper divisors (239747100).

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

166635492 is a wasteful number, since it uses less digits than its factorization.

166635492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6968 (or 6966 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 166635492 is about 12908.7370412446. The cubic root of 166635492 is about 550.2868938491.

It can be divided in two parts, 16663 and 5492, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 166635492 in words is "one hundred sixty-six million, six hundred thirty-five thousand, four hundred ninety-two".