5786138921 has 16 divisors (see below), whose sum is σ = 6378324624. Its totient is φ = 5225969664.

The previous prime is 5786138893. The next prime is 5786138929. The reversal of 5786138921 is 1298316875.

It can be written as a sum of positive squares in 8 ways, for example, as 91776400 + 5694362521 = 9580^2 + 75461^2 .

It is a cyclic number.

It is not a de Polignac number, because 5786138921 - 2⁶ = 5786138857 is a prime.

It is a super-2 number, since 2×5786138921² = 66958807226222088482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5786138921.

It is not an unprimeable number, because it can be changed into a prime (5786138929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17090 + ... + 108923.

It is an arithmetic number, because the mean of its divisors is an integer number (398645289).

Almost surely, 2^5786138921 is an apocalyptic number.

It is an amenable number.

5786138921 is a deficient number, since it is larger than the sum of its proper divisors (592185703).

5786138921 is a wasteful number, since it uses less digits than its factorization.

5786138921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126140.

The product of its digits is 725760, while the sum is 50.

The square root of 5786138921 is about 76066.6741812734. The cubic root of 5786138921 is about 1795.2693601356.

The spelling of 5786138921 in words is "five billion, seven hundred eighty-six million, one hundred thirty-eight thousand, nine hundred twenty-one".