166011394 has 16 divisors (see below), whose sum is σ = 254606688. Its totient is φ = 81160992.

The previous prime is 166011353. The next prime is 166011397. The reversal of 166011394 is 493110661.

It is not an unprimeable number, because it can be changed into a prime (166011397) 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, 13837 + ... + 22879.

It is an arithmetic number, because the mean of its divisors is an integer number (15912918).

Almost surely, 2^166011394 is an apocalyptic number.

166011394 is a deficient number, since it is larger than the sum of its proper divisors (88595294).

166011394 is a wasteful number, since it uses less digits than its factorization.

166011394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 166011394 is about 12884.5408920924. The cubic root of 166011394 is about 549.5990399953.

The spelling of 166011394 in words is "one hundred sixty-six million, eleven thousand, three hundred ninety-four".