1140471749 has 2 divisors, whose sum is σ = 1140471750. Its totient is φ = 1140471748.

The previous prime is 1140471733. The next prime is 1140471797. The reversal of 1140471749 is 9471740411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727650625 + 412821124 = 26975^2 + 20318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140471749 - 2⁴ = 1140471733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140477749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570235874 + 570235875.

It is an arithmetic number, because the mean of its divisors is an integer number (570235875).

Almost surely, 2^1140471749 is an apocalyptic number.

It is an amenable number.

1140471749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140471749 is an equidigital number, since it uses as much as digits as its factorization.

1140471749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 1140471749 is about 33770.8713094584. The cubic root of 1140471749 is about 1044.7880033621.

The spelling of 1140471749 in words is "one billion, one hundred forty million, four hundred seventy-one thousand, seven hundred forty-nine".