6441742867 has 16 divisors (see below), whose sum is σ = 8046508032. Its totient is φ = 5029061760.

The previous prime is 6441742859. The next prime is 6441742913. The reversal of 6441742867 is 7682471446.

It is a cyclic number.

It is not a de Polignac number, because 6441742867 - 2³ = 6441742859 is a prime.

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 6441742867.

It is not an unprimeable number, because it can be changed into a prime (6441748867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869413 + ... + 876790.

It is an arithmetic number, because the mean of its divisors is an integer number (502906752).

Almost surely, 2^6441742867 is an apocalyptic number.

6441742867 is a deficient number, since it is larger than the sum of its proper divisors (1604765165).

6441742867 is a wasteful number, since it uses less digits than its factorization.

6441742867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746258.

The product of its digits is 1806336, while the sum is 49.

The square root of 6441742867 is about 80260.4688934721. The cubic root of 6441742867 is about 1860.6633147939.

The spelling of 6441742867 in words is "six billion, four hundred forty-one million, seven hundred forty-two thousand, eight hundred sixty-seven".