1138244560 has 40 divisors (see below), whose sum is σ = 2673719496. Its totient is φ = 450600960.

The previous prime is 1138244521. The next prime is 1138244563. The reversal of 1138244560 is 654428311.

It can be written as a sum of positive squares in 4 ways, for example, as 157552704 + 980691856 = 12552^2 + 31316^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138244563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65581 + ... + 81100.

Almost surely, 2^1138244560 is an apocalyptic number.

1138244560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138244560 is an abundant number, since it is smaller than the sum of its proper divisors (1535474936).

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

1138244560 is a wasteful number, since it uses less digits than its factorization.

1138244560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146791 (or 146785 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1138244560 is about 33737.8801942268. The cubic root of 1138244560 is about 1044.1074496846.

The spelling of 1138244560 in words is "one billion, one hundred thirty-eight million, two hundred forty-four thousand, five hundred sixty".