166635049 has 8 divisors (see below), whose sum is σ = 191940608. Its totient is φ = 141704640.

The previous prime is 166635047. The next prime is 166635061. The reversal of 166635049 is 940536661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166635049 - 2¹ = 166635047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166635047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92832 + ... + 94609.

It is an arithmetic number, because the mean of its divisors is an integer number (23992576).

Almost surely, 2^166635049 is an apocalyptic number.

It is an amenable number.

166635049 is a deficient number, since it is larger than the sum of its proper divisors (25305559).

166635049 is a wasteful number, since it uses less digits than its factorization.

166635049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187575.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 166635049 is about 12908.7198823121. The cubic root of 166635049 is about 550.2864062033.

It can be divided in two parts, 16663 and 5049, that added together give a palindrome (21712).

The spelling of 166635049 in words is "one hundred sixty-six million, six hundred thirty-five thousand, forty-nine".