164951593 has 4 divisors (see below), whose sum is σ = 165678480. Its totient is φ = 164224708.

The previous prime is 164951581. The next prime is 164951617. The reversal of 164951593 is 395159461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164951593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164954593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363103 + ... + 363556.

It is an arithmetic number, because the mean of its divisors is an integer number (41419620).

Almost surely, 2^164951593 is an apocalyptic number.

It is an amenable number.

164951593 is a deficient number, since it is larger than the sum of its proper divisors (726887).

164951593 is an equidigital number, since it uses as much as digits as its factorization.

164951593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726886.

The product of its digits is 145800, while the sum is 43.

The square root of 164951593 is about 12843.3482005278. The cubic root of 164951593 is about 548.4270130212.

The spelling of 164951593 in words is "one hundred sixty-four million, nine hundred fifty-one thousand, five hundred ninety-three".