1140634816 has 56 divisors (see below), whose sum is σ = 2343003696. Its totient is φ = 550517760.

The previous prime is 1140634741. The next prime is 1140634819. The reversal of 1140634816 is 6184360411.

It is not an unprimeable number, because it can be changed into a prime (1140634819) 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, 308370 + ... + 312046.

Almost surely, 2^1140634816 is an apocalyptic number.

1140634816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140634816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171501848).

1140634816 is an abundant number, since it is smaller than the sum of its proper divisors (1202368880).

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

1140634816 is a wasteful number, since it uses less digits than its factorization.

1140634816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1140634816 is about 33773.2855375369. The cubic root of 1140634816 is about 1044.8377963027.

The spelling of 1140634816 in words is "one billion, one hundred forty million, six hundred thirty-four thousand, eight hundred sixteen".