5730381781 has 4 divisors (see below), whose sum is σ = 5749939692. Its totient is φ = 5710823872.

The previous prime is 5730381763. The next prime is 5730381791. The reversal of 5730381781 is 1871830375.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5515290225 + 215091556 = 74265^2 + 14666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5730381781 is a prime.

It is a super-2 number, since 2×5730381781² = 65674550712033463922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5730381751) 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, 9778516 + ... + 9779101.

It is an arithmetic number, because the mean of its divisors is an integer number (1437484923).

Almost surely, 2^5730381781 is an apocalyptic number.

It is an amenable number.

5730381781 is a deficient number, since it is larger than the sum of its proper divisors (19557911).

5730381781 is a wasteful number, since it uses less digits than its factorization.

5730381781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19557910.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 5730381781 is about 75699.2852079859. The cubic root of 5730381781 is about 1789.4841351280.

The spelling of 5730381781 in words is "five billion, seven hundred thirty million, three hundred eighty-one thousand, seven hundred eighty-one".