13812691149 has 36 divisors (see below), whose sum is σ = 20563108020. Its totient is φ = 8934416640.

The previous prime is 13812691141. The next prime is 13812691159. The reversal of 13812691149 is 94119621831.

13812691149 is a `hidden beast` number, since 1 + 381 + 269 + 1 + 1 + 4 + 9 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4323983049 + 9488708100 = 65757^2 + 97410^2 .

It is not a de Polignac number, because 13812691149 - 2³ = 13812691141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812691141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5037919 + ... + 5040659.

It is an arithmetic number, because the mean of its divisors is an integer number (571197445).

Almost surely, 2^13812691149 is an apocalyptic number.

It is an amenable number.

13812691149 is a deficient number, since it is larger than the sum of its proper divisors (6750416871).

13812691149 is a wasteful number, since it uses less digits than its factorization.

13812691149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230 (or 3190 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The spelling of 13812691149 in words is "thirteen billion, eight hundred twelve million, six hundred ninety-one thousand, one hundred forty-nine".