1115847438 has 16 divisors (see below), whose sum is σ = 2328725376. Its totient is φ = 355777400.

The previous prime is 1115847437. The next prime is 1115847487. The reversal of 1115847438 is 8347485111.

It is a self number, because there is not a number n which added to its sum of digits gives 1115847438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115847433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4042788 + ... + 4043063.

It is an arithmetic number, because the mean of its divisors is an integer number (145545336).

Almost surely, 2^1115847438 is an apocalyptic number.

1115847438 is an abundant number, since it is smaller than the sum of its proper divisors (1212877938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1115847438 is a wasteful number, since it uses less digits than its factorization.

1115847438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085879.

The product of its digits is 107520, while the sum is 42.

The square root of 1115847438 is about 33404.3026869294. The cubic root of 1115847438 is about 1037.2137693591.

The spelling of 1115847438 in words is "one billion, one hundred fifteen million, eight hundred forty-seven thousand, four hundred thirty-eight".