1140322661 has 4 divisors (see below), whose sum is σ = 1140571872. Its totient is φ = 1140073452.

The previous prime is 1140322657. The next prime is 1140322669. The reversal of 1140322661 is 1662230411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1140322661 - 2² = 1140322657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140322661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140322669) 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 3 ways as a sum of consecutive naturals, for example, 117611 + ... + 126936.

It is an arithmetic number, because the mean of its divisors is an integer number (285142968).

Almost surely, 2^1140322661 is an apocalyptic number.

It is an amenable number.

1140322661 is a deficient number, since it is larger than the sum of its proper divisors (249211).

1140322661 is an equidigital number, since it uses as much as digits as its factorization.

1140322661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249210.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1140322661 is about 33768.6638912469. The cubic root of 1140322661 is about 1044.7424747926.

The spelling of 1140322661 in words is "one billion, one hundred forty million, three hundred twenty-two thousand, six hundred sixty-one".