1156840684 has 24 divisors (see below), whose sum is σ = 2157230880. Its totient is φ = 540923136.

The previous prime is 1156840621. The next prime is 1156840691. The reversal of 1156840684 is 4860486511.

It is a self number, because there is not a number n which added to its sum of digits gives 1156840684.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43504 + ... + 64855.

It is an arithmetic number, because the mean of its divisors is an integer number (89884620).

Almost surely, 2^1156840684 is an apocalyptic number.

It is an amenable number.

1156840684 is a deficient number, since it is larger than the sum of its proper divisors (1000390196).

1156840684 is a wasteful number, since it uses less digits than its factorization.

1156840684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108537 (or 108535 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 1156840684 is about 34012.3607531144. The cubic root of 1156840684 is about 1049.7628138482.

The spelling of 1156840684 in words is "one billion, one hundred fifty-six million, eight hundred forty thousand, six hundred eighty-four".