166390298 has 8 divisors (see below), whose sum is σ = 249709908. Its totient is φ = 83153664.

The previous prime is 166390253. The next prime is 166390307. The reversal of 166390298 is 892093661.

It can be written as a sum of positive squares in 2 ways, for example, as 165971689 + 418609 = 12883^2 + 647^2 .

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

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, 15461 + ... + 23912.

Almost surely, 2^166390298 is an apocalyptic number.

166390298 is a deficient number, since it is larger than the sum of its proper divisors (83319610).

166390298 is a wasteful number, since it uses less digits than its factorization.

166390298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41488.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 166390298 is about 12899.2363339850. The cubic root of 166390298 is about 550.0168567836.

The spelling of 166390298 in words is "one hundred sixty-six million, three hundred ninety thousand, two hundred ninety-eight".