164545739 has 4 divisors (see below), whose sum is σ = 170219760. Its totient is φ = 158871720.

The previous prime is 164545699. The next prime is 164545753. The reversal of 164545739 is 937545461.

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

It is a cyclic number.

It is not a de Polignac number, because 164545739 - 2⁸ = 164545483 is a prime.

It is a super-2 number, since 2×164545739² = 54150600446112242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164545739.

It is not an unprimeable number, because it can be changed into a prime (164545789) 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, 2836967 + ... + 2837024.

It is an arithmetic number, because the mean of its divisors is an integer number (42554940).

Almost surely, 2^164545739 is an apocalyptic number.

164545739 is a deficient number, since it is larger than the sum of its proper divisors (5674021).

164545739 is an equidigital number, since it uses as much as digits as its factorization.

164545739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674020.

The product of its digits is 453600, while the sum is 44.

The square root of 164545739 is about 12827.5383063158. The cubic root of 164545739 is about 547.9768524774.

The spelling of 164545739 in words is "one hundred sixty-four million, five hundred forty-five thousand, seven hundred thirty-nine".