5647981481 has 8 divisors (see below), whose sum is σ = 5881772544. Its totient is φ = 5417415360.

The previous prime is 5647981351. The next prime is 5647981483. The reversal of 5647981481 is 1841897465.

5647981481 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 a cyclic number.

It is not a de Polignac number, because 5647981481 - 2²⁶ = 5580872617 is a prime.

It is a super-2 number, since 2×5647981481² = 63799389619437906722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5647981483) 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, 802661 + ... + 809666.

It is an arithmetic number, because the mean of its divisors is an integer number (735221568).

Almost surely, 2^5647981481 is an apocalyptic number.

It is an amenable number.

5647981481 is a deficient number, since it is larger than the sum of its proper divisors (233791063).

5647981481 is a wasteful number, since it uses less digits than its factorization.

5647981481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612471.

The product of its digits is 1935360, while the sum is 53.

The square root of 5647981481 is about 75153.0537037584. The cubic root of 5647981481 is about 1780.8653664777.

The spelling of 5647981481 in words is "five billion, six hundred forty-seven million, nine hundred eighty-one thousand, four hundred eighty-one".