6442673731 has 8 divisors (see below), whose sum is σ = 6940158624. Its totient is φ = 5945459520.

The previous prime is 6442673717. The next prime is 6442673737. The reversal of 6442673731 is 1373762446.

6442673731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6442673731 - 2³¹ = 4295190083 is a prime.

It is a super-2 number, since 2×6442673731² = 83016089608234920722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442673737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16810 + ... + 114751.

It is an arithmetic number, because the mean of its divisors is an integer number (867519828).

Almost surely, 2^6442673731 is an apocalyptic number.

6442673731 is a deficient number, since it is larger than the sum of its proper divisors (497484893).

6442673731 is a wasteful number, since it uses less digits than its factorization.

6442673731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135341.

The product of its digits is 508032, while the sum is 43.

The square root of 6442673731 is about 80266.2677031890. The cubic root of 6442673731 is about 1860.7529355229.

The spelling of 6442673731 in words is "six billion, four hundred forty-two million, six hundred seventy-three thousand, seven hundred thirty-one".