164451005 has 4 divisors (see below), whose sum is σ = 197341212. Its totient is φ = 131560800.

The previous prime is 164450983. The next prime is 164451011. The reversal of 164451005 is 500154461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123054649 + 41396356 = 11093^2 + 6434^2 .

It is not a de Polignac number, because 164451005 - 2⁶ = 164450941 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 3 ways as a sum of consecutive naturals, for example, 16445096 + ... + 16445105.

It is an arithmetic number, because the mean of its divisors is an integer number (49335303).

Almost surely, 2^164451005 is an apocalyptic number.

It is an amenable number.

164451005 is a deficient number, since it is larger than the sum of its proper divisors (32890207).

164451005 is an equidigital number, since it uses as much as digits as its factorization.

164451005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32890206.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 164451005 is about 12823.8451721783. The cubic root of 164451005 is about 547.8716699608.

The spelling of 164451005 in words is "one hundred sixty-four million, four hundred fifty-one thousand, five".