1140166566 has 48 divisors (see below), whose sum is σ = 3079934208. Its totient is φ = 296146800.

The previous prime is 1140166553. The next prime is 1140166579. The reversal of 1140166566 is 6656610411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1140166553) and next prime (1140166579).

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 self number, because there is not a number n which added to its sum of digits gives 1140166566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409930 + ... + 412701.

It is an arithmetic number, because the mean of its divisors is an integer number (64165296).

Almost surely, 2^1140166566 is an apocalyptic number.

1140166566 is an abundant number, since it is smaller than the sum of its proper divisors (1939767642).

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

1140166566 is a wasteful number, since it uses less digits than its factorization.

1140166566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822657 (or 822654 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1140166566 is about 33766.3525717540. The cubic root of 1140166566 is about 1044.6948021692.

Adding to 1140166566 its reverse (6656610411), we get a palindrome (7796776977).

The spelling of 1140166566 in words is "one billion, one hundred forty million, one hundred sixty-six thousand, five hundred sixty-six".