2135711786 has 16 divisors (see below), whose sum is σ = 3568962600. Its totient is φ = 951722688.

The previous prime is 2135711779. The next prime is 2135711789. The reversal of 2135711786 is 6871175312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1287446161 + 848265625 = 35881^2 + 29125^2 .

It is a super-2 number, since 2×2135711786² = 9122529665718619592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2135711789) 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, 1415501 + ... + 1417008.

Almost surely, 2^2135711786 is an apocalyptic number.

2135711786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2135711786 is a deficient number, since it is larger than the sum of its proper divisors (1433250814).

2135711786 is a wasteful number, since it uses less digits than its factorization.

2135711786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832553.

The product of its digits is 70560, while the sum is 41.

The square root of 2135711786 is about 46213.7618680843. The cubic root of 2135711786 is about 1287.7974123746.

The spelling of 2135711786 in words is "two billion, one hundred thirty-five million, seven hundred eleven thousand, seven hundred eighty-six".