166047194 has 32 divisors (see below), whose sum is σ = 285145920. Its totient is φ = 72016128.

The previous prime is 166047179. The next prime is 166047197. The reversal of 166047194 is 491740661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (166047197) 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, 20429 + ... + 27375.

It is an arithmetic number, because the mean of its divisors is an integer number (8910810).

Almost surely, 2^166047194 is an apocalyptic number.

166047194 is a deficient number, since it is larger than the sum of its proper divisors (119098726).

166047194 is a wasteful number, since it uses less digits than its factorization.

166047194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166047194 is about 12885.9300789660. The cubic root of 166047194 is about 549.6385437727.

The spelling of 166047194 in words is "one hundred sixty-six million, forty-seven thousand, one hundred ninety-four".