166334389 has 16 divisors (see below), whose sum is σ = 182020608. Its totient is φ = 151083072.

The previous prime is 166334381. The next prime is 166334411. The reversal of 166334389 is 983433661.

It is a cyclic number.

It is not a de Polignac number, because 166334389 - 2³ = 166334381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166334381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273724 + ... + 274330.

It is an arithmetic number, because the mean of its divisors is an integer number (11376288).

Almost surely, 2^166334389 is an apocalyptic number.

It is an amenable number.

166334389 is a deficient number, since it is larger than the sum of its proper divisors (15686219).

166334389 is a wasteful number, since it uses less digits than its factorization.

166334389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its digits is 279936, while the sum is 43.

The square root of 166334389 is about 12897.0690081119. The cubic root of 166334389 is about 549.9552459452.

The spelling of 166334389 in words is "one hundred sixty-six million, three hundred thirty-four thousand, three hundred eighty-nine".