164095640 has 32 divisors (see below), whose sum is σ = 373896000. Its totient is φ = 64806144.

The previous prime is 164095627. The next prime is 164095643. The reversal of 164095640 is 46590461.

It is a self number, because there is not a number n which added to its sum of digits gives 164095640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164095643) 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, 22805 + ... + 29124.

It is an arithmetic number, because the mean of its divisors is an integer number (11684250).

Almost surely, 2^164095640 is an apocalyptic number.

164095640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164095640 is an abundant number, since it is smaller than the sum of its proper divisors (209800360).

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

164095640 is a wasteful number, since it uses less digits than its factorization.

164095640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52019 (or 52015 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 164095640 is about 12809.9820452645. The cubic root of 164095640 is about 547.4767502620.

The spelling of 164095640 in words is "one hundred sixty-four million, ninety-five thousand, six hundred forty".