166319994 has 8 divisors (see below), whose sum is σ = 332640000. Its totient is φ = 55439996.

The previous prime is 166319987. The next prime is 166320019. The reversal of 166319994 is 499913661.

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

166319994 is an admirable number.

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, 13859994 + ... + 13860005.

It is an arithmetic number, because the mean of its divisors is an integer number (41580000).

Almost surely, 2^166319994 is an apocalyptic number.

166319994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166319994 is a wasteful number, since it uses less digits than its factorization.

166319994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27720004.

The product of its digits is 314928, while the sum is 48.

The square root of 166319994 is about 12896.5109235018. The cubic root of 166319994 is about 549.9393806468.

The spelling of 166319994 in words is "one hundred sixty-six million, three hundred nineteen thousand, nine hundred ninety-four".