1113645144 has 32 divisors (see below), whose sum is σ = 2792157120. Its totient is φ = 370142496.

The previous prime is 1113645131. The next prime is 1113645151. The reversal of 1113645144 is 4415463111.

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, 58534 + ... + 75189.

It is an arithmetic number, because the mean of its divisors is an integer number (87254910).

Almost surely, 2^1113645144 is an apocalyptic number.

It is an amenable number.

1113645144 is an abundant number, since it is smaller than the sum of its proper divisors (1678511976).

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

1113645144 is a wasteful number, since it uses less digits than its factorization.

1113645144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134079 (or 134075 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 1113645144 is about 33371.3221793803. The cubic root of 1113645144 is about 1036.5309537686.

It can be divided in two parts, 11136 and 45144, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 1113645144 in words is "one billion, one hundred thirteen million, six hundred forty-five thousand, one hundred forty-four".