1140885640 has 32 divisors (see below), whose sum is σ = 2717993880. Its totient is φ = 429509632.

The previous prime is 1140885637. The next prime is 1140885667. The reversal of 1140885640 is 465880411.

It can be written as a sum of positive squares in 4 ways, for example, as 1136633796 + 4251844 = 33714^2 + 2062^2 .

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1140885640.

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, 838207 + ... + 839566.

Almost surely, 2^1140885640 is an apocalyptic number.

1140885640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140885640 is an abundant number, since it is smaller than the sum of its proper divisors (1577108240).

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

1140885640 is a wasteful number, since it uses less digits than its factorization.

1140885640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677801 (or 1677797 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 1140885640 is about 33776.9986825354. The cubic root of 1140885640 is about 1044.9143768128.

The spelling of 1140885640 in words is "one billion, one hundred forty million, eight hundred eighty-five thousand, six hundred forty".