6281994747 has 8 divisors (see below), whose sum is σ = 9572563456. Its totient is φ = 3589711272.

The previous prime is 6281994739. The next prime is 6281994767. The reversal of 6281994747 is 7474991826.

It is a happy number.

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

It is not a de Polignac number, because 6281994747 - 2³ = 6281994739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6281994727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149571283 + ... + 149571324.

It is an arithmetic number, because the mean of its divisors is an integer number (1196570432).

Almost surely, 2^6281994747 is an apocalyptic number.

6281994747 is a deficient number, since it is larger than the sum of its proper divisors (3290568709).

6281994747 is a wasteful number, since it uses less digits than its factorization.

6281994747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299142617.

The product of its digits is 6096384, while the sum is 57.

The square root of 6281994747 is about 79259.0357435668. The cubic root of 6281994747 is about 1845.1535918433.

The spelling of 6281994747 in words is "six billion, two hundred eighty-one million, nine hundred ninety-four thousand, seven hundred forty-seven".