164489456 has 10 divisors (see below), whose sum is σ = 318698352. Its totient is φ = 82244720.

The previous prime is 164489449. The next prime is 164489459. The reversal of 164489456 is 654984461.

It is a happy number.

It is a super-2 number, since 2×164489456² = 54113562270351872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164489456.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5140280 + ... + 5140311.

Almost surely, 2^164489456 is an apocalyptic number.

164489456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164489456 is a deficient number, since it is larger than the sum of its proper divisors (154208896).

164489456 is a wasteful number, since it uses less digits than its factorization.

164489456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280599 (or 10280593 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The square root of 164489456 is about 12825.3442838779. The cubic root of 164489456 is about 547.9143667140.

The spelling of 164489456 in words is "one hundred sixty-four million, four hundred eighty-nine thousand, four hundred fifty-six".