164274843749 has 4 divisors (see below), whose sum is σ = 164597584620. Its totient is φ = 163952102880.

The previous prime is 164274843743. The next prime is 164274843757. The reversal of 164274843749 is 947348472461.

164274843749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66521694724 + 97753149025 = 257918^2 + 312655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164274843749 is a prime.

It is a super-3 number, since 3×164274843749³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164274843743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161369672 + ... + 161370689.

It is an arithmetic number, because the mean of its divisors is an integer number (41149396155).

Almost surely, 2^164274843749 is an apocalyptic number.

It is an amenable number.

164274843749 is a deficient number, since it is larger than the sum of its proper divisors (322740871).

164274843749 is an equidigital number, since it uses as much as digits as its factorization.

164274843749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322740870.

The product of its digits is 32514048, while the sum is 59.

The spelling of 164274843749 in words is "one hundred sixty-four billion, two hundred seventy-four million, eight hundred forty-three thousand, seven hundred forty-nine".