1115511849 has 12 divisors (see below), whose sum is σ = 1629400500. Its totient is φ = 735318144.

The previous prime is 1115511821. The next prime is 1115511871. The reversal of 1115511849 is 9481155111.

It can be written as a sum of positive squares in 2 ways, for example, as 171793449 + 943718400 = 13107^2 + 30720^2 .

It is not a de Polignac number, because 1115511849 - 2²⁵ = 1081957417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115511809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 695524 + ... + 697125.

It is an arithmetic number, because the mean of its divisors is an integer number (135783375).

Almost surely, 2^1115511849 is an apocalyptic number.

It is an amenable number.

1115511849 is a deficient number, since it is larger than the sum of its proper divisors (513888651).

1115511849 is a wasteful number, since it uses less digits than its factorization.

1115511849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392744 (or 1392741 counting only the distinct ones).

The product of its digits is 7200, while the sum is 36.

The square root of 1115511849 is about 33399.2791688683. The cubic root of 1115511849 is about 1037.1097789090.

The spelling of 1115511849 in words is "one billion, one hundred fifteen million, five hundred eleven thousand, eight hundred forty-nine".