6493874881 has 8 divisors (see below), whose sum is σ = 6994109864. Its totient is φ = 5993740800.

The previous prime is 6493874879. The next prime is 6493874951. The reversal of 6493874881 is 1884783946.

It can be written as a sum of positive squares in 4 ways, for example, as 231526656 + 6262348225 = 15216^2 + 79135^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6493874881 - 2¹ = 6493874879 is a prime.

It is a super-2 number, since 2×6493874881² = 84340821940165528322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6493874801) 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, 157531 + ... + 194431.

It is an arithmetic number, because the mean of its divisors is an integer number (874263733).

Almost surely, 2^6493874881 is an apocalyptic number.

It is an amenable number.

6493874881 is a deficient number, since it is larger than the sum of its proper divisors (500234983).

6493874881 is a wasteful number, since it uses less digits than its factorization.

6493874881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50451.

The product of its digits is 9289728, while the sum is 58.

The square root of 6493874881 is about 80584.5821544047. The cubic root of 6493874881 is about 1865.6691871281.

The spelling of 6493874881 in words is "six billion, four hundred ninety-three million, eight hundred seventy-four thousand, eight hundred eighty-one".