2135813779 has 32 divisors (see below), whose sum is σ = 2504053440. Its totient is φ = 1803110400.

The previous prime is 2135813767. The next prime is 2135813843. The reversal of 2135813779 is 9773185312.

It is a cyclic number.

It is not a de Polignac number, because 2135813779 - 2¹³ = 2135805587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135813749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 953649 + ... + 955885.

It is an arithmetic number, because the mean of its divisors is an integer number (78251670).

Almost surely, 2^2135813779 is an apocalyptic number.

2135813779 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2135813779 is a deficient number, since it is larger than the sum of its proper divisors (368239661).

2135813779 is a wasteful number, since it uses less digits than its factorization.

2135813779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its digits is 317520, while the sum is 46.

The square root of 2135813779 is about 46214.8653465527. The cubic root of 2135813779 is about 1287.8179120555.

The spelling of 2135813779 in words is "two billion, one hundred thirty-five million, eight hundred thirteen thousand, seven hundred seventy-nine".