1140187806 has 16 divisors (see below), whose sum is σ = 2533750800. Its totient is φ = 380062584.

The previous prime is 1140187801. The next prime is 1140187817. The reversal of 1140187806 is 6087810411.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140187801) 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, 10557241 + ... + 10557348.

It is an arithmetic number, because the mean of its divisors is an integer number (158359425).

Almost surely, 2^1140187806 is an apocalyptic number.

1140187806 is an abundant number, since it is smaller than the sum of its proper divisors (1393562994).

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

1140187806 is a wasteful number, since it uses less digits than its factorization.

1140187806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21114600 (or 21114594 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1140187806 is about 33766.6670845673. The cubic root of 1140187806 is about 1044.7012892857.

The spelling of 1140187806 in words is "one billion, one hundred forty million, one hundred eighty-seven thousand, eight hundred six".