164455632 has 120 divisors (see below), whose sum is σ = 513002880. Its totient is φ = 48774720.

The previous prime is 164455631. The next prime is 164455649. The reversal of 164455632 is 236554461.

164455632 is a `hidden beast` number, since 1 + 644 + 5 + 5 + 6 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164455631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3499033 + ... + 3499079.

It is an arithmetic number, because the mean of its divisors is an integer number (4275024).

Almost surely, 2^164455632 is an apocalyptic number.

164455632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164455632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256501440).

164455632 is an abundant number, since it is smaller than the sum of its proper divisors (348547248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164455632 is an equidigital number, since it uses as much as digits as its factorization.

164455632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 63 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 164455632 is about 12824.0255770175. The cubic root of 164455632 is about 547.8768082256.

The spelling of 164455632 in words is "one hundred sixty-four million, four hundred fifty-five thousand, six hundred thirty-two".