1140871640 has 32 divisors (see below), whose sum is σ = 2615399280. Its totient is φ = 447737472.

The previous prime is 1140871639. The next prime is 1140871679. The reversal of 1140871640 is 461780411.

It is a junction number, because it is equal to n+sod(n) for n = 1140871597 and 1140871606.

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, 266954 + ... + 271193.

Almost surely, 2^1140871640 is an apocalyptic number.

1140871640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140871640 is an abundant number, since it is smaller than the sum of its proper divisors (1474527640).

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

1140871640 is a wasteful number, since it uses less digits than its factorization.

1140871640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538211 (or 538207 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1140871640 is about 33776.7914402774. The cubic root of 1140871640 is about 1044.9101026885.

The spelling of 1140871640 in words is "one billion, one hundred forty million, eight hundred seventy-one thousand, six hundred forty".