164572743 has 4 divisors (see below), whose sum is σ = 219430328. Its totient is φ = 109715160.

The previous prime is 164572697. The next prime is 164572747. The reversal of 164572743 is 347275461.

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

It is not a de Polignac number, because 164572743 - 2⁸ = 164572487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164572747) 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, 27428788 + ... + 27428793.

It is an arithmetic number, because the mean of its divisors is an integer number (54857582).

Almost surely, 2^164572743 is an apocalyptic number.

164572743 is a deficient number, since it is larger than the sum of its proper divisors (54857585).

164572743 is an equidigital number, since it uses as much as digits as its factorization.

164572743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54857584.

The product of its digits is 141120, while the sum is 39.

The square root of 164572743 is about 12828.5908423334. The cubic root of 164572743 is about 548.0068274408.

The spelling of 164572743 in words is "one hundred sixty-four million, five hundred seventy-two thousand, seven hundred forty-three".