6441495131 has 4 divisors (see below), whose sum is σ = 6615589632. Its totient is φ = 6267400632.

The previous prime is 6441495059. The next prime is 6441495149. The reversal of 6441495131 is 1315941446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6441495131 is a prime.

It is a super-2 number, since 2×6441495131² = 82985719045393414322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6441492131) 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, 87047195 + ... + 87047268.

It is an arithmetic number, because the mean of its divisors is an integer number (1653897408).

Almost surely, 2^6441495131 is an apocalyptic number.

6441495131 is a deficient number, since it is larger than the sum of its proper divisors (174094501).

6441495131 is a wasteful number, since it uses less digits than its factorization.

6441495131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174094500.

The product of its digits is 51840, while the sum is 38.

The square root of 6441495131 is about 80258.9255534859. The cubic root of 6441495131 is about 1860.6394620776.

The spelling of 6441495131 in words is "six billion, four hundred forty-one million, four hundred ninety-five thousand, one hundred thirty-one".