5766391538 has 4 divisors (see below), whose sum is σ = 8649587310. Its totient is φ = 2883195768.

The previous prime is 5766391493. The next prime is 5766391541. The reversal of 5766391538 is 8351936675.

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

It can be written as a sum of positive squares in only one way, i.e., 5555764369 + 210627169 = 74537^2 + 14513^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5766391538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1441597883 + ... + 1441597886.

Almost surely, 2^5766391538 is an apocalyptic number.

5766391538 is a deficient number, since it is larger than the sum of its proper divisors (2883195772).

5766391538 is a wasteful number, since it uses less digits than its factorization.

5766391538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883195771.

The product of its digits is 4082400, while the sum is 53.

The square root of 5766391538 is about 75936.7601231446. The cubic root of 5766391538 is about 1793.2246875289.

The spelling of 5766391538 in words is "five billion, seven hundred sixty-six million, three hundred ninety-one thousand, five hundred thirty-eight".