1140438548 has 12 divisors (see below), whose sum is σ = 2001120660. Its totient is φ = 568689792.

The previous prime is 1140438547. The next prime is 1140438569. The reversal of 1140438548 is 8458340411.

It can be written as a sum of positive squares in 2 ways, for example, as 847275664 + 293162884 = 29108^2 + 17122^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140438547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380693 + ... + 383676.

It is an arithmetic number, because the mean of its divisors is an integer number (166760055).

Almost surely, 2^1140438548 is an apocalyptic number.

It is an amenable number.

1140438548 is a deficient number, since it is larger than the sum of its proper divisors (860682112).

1140438548 is a wasteful number, since it uses less digits than its factorization.

1140438548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764746 (or 764744 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 1140438548 is about 33770.3797432010. The cubic root of 1140438548 is about 1044.7778647672. Note that the first 3 decimals are identical.

Adding to 1140438548 its reverse (8458340411), we get a palindrome (9598778959).

The spelling of 1140438548 in words is "one billion, one hundred forty million, four hundred thirty-eight thousand, five hundred forty-eight".