5781755818 has 8 divisors (see below), whose sum is σ = 8710506180. Its totient is φ = 2878253760.

The previous prime is 5781755813. The next prime is 5781755831. The reversal of 5781755818 is 8185571875.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4905181369 + 876574449 = 70037^2 + 29607^2 .

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

It is not an unprimeable number, because it can be changed into a prime (5781755813) 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, 6311503 + ... + 6312418.

Almost surely, 2^5781755818 is an apocalyptic number.

5781755818 is a deficient number, since it is larger than the sum of its proper divisors (2928750362).

5781755818 is a wasteful number, since it uses less digits than its factorization.

5781755818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624152.

The product of its digits is 3136000, while the sum is 55.

The square root of 5781755818 is about 76037.8577946538. The cubic root of 5781755818 is about 1794.8159294804.

The spelling of 5781755818 in words is "five billion, seven hundred eighty-one million, seven hundred fifty-five thousand, eight hundred eighteen".