164450005 has 8 divisors (see below), whose sum is σ = 198781272. Its totient is φ = 130599168.

The previous prime is 164449991. The next prime is 164450029. The reversal of 164450005 is 500054461.

It can be written as a sum of positive squares in 4 ways, for example, as 41705764 + 122744241 = 6458^2 + 11079^2 .

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 164450005 - 2⁵ = 164449973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119352 + ... + 120721.

It is an arithmetic number, because the mean of its divisors is an integer number (24847659).

Almost surely, 2^164450005 is an apocalyptic number.

It is an amenable number.

164450005 is a deficient number, since it is larger than the sum of its proper divisors (34331267).

164450005 is a wasteful number, since it uses less digits than its factorization.

164450005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240215.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 164450005 is about 12823.8061822534. The cubic root of 164450005 is about 547.8705594522.

The spelling of 164450005 in words is "one hundred sixty-four million, four hundred fifty thousand, five".