1113849681 has 16 divisors (see below), whose sum is σ = 1771090944. Its totient is φ = 608811984.

The previous prime is 1113849679. The next prime is 1113849689. The reversal of 1113849681 is 1869483111.

It is not a de Polignac number, because 1113849681 - 2¹ = 1113849679 is a prime.

It is a super-2 number, since 2×1113849681² = 2481322223727603522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1113849689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152571 + ... + 1153536.

It is an arithmetic number, because the mean of its divisors is an integer number (110693184).

Almost surely, 2^1113849681 is an apocalyptic number.

It is an amenable number.

1113849681 is a deficient number, since it is larger than the sum of its proper divisors (657241263).

1113849681 is a wasteful number, since it uses less digits than its factorization.

1113849681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306140.

The product of its digits is 41472, while the sum is 42.

The square root of 1113849681 is about 33374.3866011047. The cubic root of 1113849681 is about 1036.5944078394.

The spelling of 1113849681 in words is "one billion, one hundred thirteen million, eight hundred forty-nine thousand, six hundred eighty-one".