164444457 has 8 divisors (see below), whose sum is σ = 228792384. Its totient is φ = 104863088.

The previous prime is 164444419. The next prime is 164444459. The reversal of 164444457 is 754444461.

164444457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 164444457 - 2⁶ = 164444393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164444459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191558 + ... + 1191695.

It is an arithmetic number, because the mean of its divisors is an integer number (28599048).

Almost surely, 2^164444457 is an apocalyptic number.

It is an amenable number.

164444457 is a deficient number, since it is larger than the sum of its proper divisors (64347927).

164444457 is a wasteful number, since it uses less digits than its factorization.

164444457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383279.

The product of its digits is 215040, while the sum is 39.

The square root of 164444457 is about 12823.5898639967. The cubic root of 164444457 is about 547.8643982685.

The spelling of 164444457 in words is "one hundred sixty-four million, four hundred forty-four thousand, four hundred fifty-seven".