1671572713 has 4 divisors (see below), whose sum is σ = 1674392148. Its totient is φ = 1668753280.

The previous prime is 1671572681. The next prime is 1671572759. The reversal of 1671572713 is 3172751761.

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 726194704 + 945378009 = 26948^2 + 30747^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671572713 - 2⁵ = 1671572681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671572783) 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, 1408828 + ... + 1410013.

It is an arithmetic number, because the mean of its divisors is an integer number (418598037).

Almost surely, 2^1671572713 is an apocalyptic number.

It is an amenable number.

1671572713 is a deficient number, since it is larger than the sum of its proper divisors (2819435).

1671572713 is an equidigital number, since it uses as much as digits as its factorization.

1671572713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819434.

The product of its digits is 61740, while the sum is 40.

The square root of 1671572713 is about 40884.8714440929. The cubic root of 1671572713 is about 1186.7933140914.

The spelling of 1671572713 in words is "one billion, six hundred seventy-one million, five hundred seventy-two thousand, seven hundred thirteen".