166128464 has 10 divisors (see below), whose sum is σ = 321873930. Its totient is φ = 83064224.

The previous prime is 166128439. The next prime is 166128493. The reversal of 166128464 is 464821661.

166128464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126337600 + 39790864 = 11240^2 + 6308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5191499 + ... + 5191530.

It is an arithmetic number, because the mean of its divisors is an integer number (32187393).

Almost surely, 2^166128464 is an apocalyptic number.

It is an amenable number.

166128464 is a deficient number, since it is larger than the sum of its proper divisors (155745466).

166128464 is a wasteful number, since it uses less digits than its factorization.

166128464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10383037 (or 10383031 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 166128464 is about 12889.0831326359. The cubic root of 166128464 is about 549.7282006904.

The spelling of 166128464 in words is "one hundred sixty-six million, one hundred twenty-eight thousand, four hundred sixty-four".