1113581478 has 16 divisors (see below), whose sum is σ = 2323996416. Its totient is φ = 355054920.

The previous prime is 1113581423. The next prime is 1113581503. The reversal of 1113581478 is 8741853111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4034578 + ... + 4034853.

It is an arithmetic number, because the mean of its divisors is an integer number (145249776).

Almost surely, 2^1113581478 is an apocalyptic number.

1113581478 is an abundant number, since it is smaller than the sum of its proper divisors (1210414938).

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

1113581478 is a wasteful number, since it uses less digits than its factorization.

1113581478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8069459.

The product of its digits is 26880, while the sum is 39.

The square root of 1113581478 is about 33370.3682628766. The cubic root of 1113581478 is about 1036.5112009064.

The spelling of 1113581478 in words is "one billion, one hundred thirteen million, five hundred eighty-one thousand, four hundred seventy-eight".