166394000 has 80 divisors (see below), whose sum is σ = 405140736. Its totient is φ = 66096000.

The previous prime is 166393999. The next prime is 166394017. The reversal of 166394000 is 493661.

166394000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541847 + ... + 542153.

Almost surely, 2^166394000 is an apocalyptic number.

166394000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166394000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202570368).

166394000 is an abundant number, since it is smaller than the sum of its proper divisors (238746736).

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

166394000 is a wasteful number, since it uses less digits than its factorization.

166394000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 166394000 is about 12899.3798300538. The cubic root of 166394000 is about 550.0209358422.

The spelling of 166394000 in words is "one hundred sixty-six million, three hundred ninety-four thousand".