164489457 has 36 divisors (see below), whose sum is σ = 248509968. Its totient is φ = 96703200.

The previous prime is 164489449. The next prime is 164489459. The reversal of 164489457 is 754984461.

It is not a de Polignac number, because 164489457 - 2³ = 164489449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164489459) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 496782 + ... + 497112.

Almost surely, 2^164489457 is an apocalyptic number.

It is an amenable number.

164489457 is a deficient number, since it is larger than the sum of its proper divisors (84020511).

164489457 is a wasteful number, since it uses less digits than its factorization.

164489457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 382 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 164489457 is about 12825.3443228632. The cubic root of 164489457 is about 547.9143678244.

The spelling of 164489457 in words is "one hundred sixty-four million, four hundred eighty-nine thousand, four hundred fifty-seven".