1140808851 has 48 divisors (see below), whose sum is σ = 2147431104. Its totient is φ = 566341632.

The previous prime is 1140808843. The next prime is 1140808861. The reversal of 1140808851 is 1588080411.

It is a happy number.

It is not a de Polignac number, because 1140808851 - 2³ = 1140808843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140808831) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 27046 + ... + 54891.

It is an arithmetic number, because the mean of its divisors is an integer number (44738148).

Almost surely, 2^1140808851 is an apocalyptic number.

1140808851 is a deficient number, since it is larger than the sum of its proper divisors (1006622253).

1140808851 is a wasteful number, since it uses less digits than its factorization.

1140808851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81980 (or 81977 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The square root of 1140808851 is about 33775.8619579131. The cubic root of 1140808851 is about 1044.8909331162.

The spelling of 1140808851 in words is "one billion, one hundred forty million, eight hundred eight thousand, eight hundred fifty-one".