164140193 has 8 divisors (see below), whose sum is σ = 187674240. Its totient is φ = 140627520.

The previous prime is 164140189. The next prime is 164140201. The reversal of 164140193 is 391041461.

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 164140193 - 2² = 164140189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164140153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17828 + ... + 25418.

It is an arithmetic number, because the mean of its divisors is an integer number (23459280).

Almost surely, 2^164140193 is an apocalyptic number.

It is an amenable number.

164140193 is a deficient number, since it is larger than the sum of its proper divisors (23534047).

164140193 is an equidigital number, since it uses as much as digits as its factorization.

164140193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10687.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 164140193 is about 12811.7209226552. The cubic root of 164140193 is about 547.5262935740.

The spelling of 164140193 in words is "one hundred sixty-four million, one hundred forty thousand, one hundred ninety-three".