166389357 has 16 divisors (see below), whose sum is σ = 227691072. Its totient is φ = 108017280.

The previous prime is 166389347. The next prime is 166389361. The reversal of 166389357 is 753983661.

It is a happy number.

It is not a de Polignac number, because 166389357 - 2⁷ = 166389229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166389347) 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, 92218 + ... + 94004.

It is an arithmetic number, because the mean of its divisors is an integer number (14230692).

Almost surely, 2^166389357 is an apocalyptic number.

It is an amenable number.

166389357 is a deficient number, since it is larger than the sum of its proper divisors (61301715).

166389357 is a wasteful number, since it uses less digits than its factorization.

166389357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588.

The product of its digits is 816480, while the sum is 48.

The square root of 166389357 is about 12899.1998589060. The cubic root of 166389357 is about 550.0158199306.

The spelling of 166389357 in words is "one hundred sixty-six million, three hundred eighty-nine thousand, three hundred fifty-seven".