1143765791989 has 2 divisors, whose sum is σ = 1143765791990. Its totient is φ = 1143765791988.

The previous prime is 1143765791957. The next prime is 1143765792007. The reversal of 1143765791989 is 9891975673411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1125791027089 + 17974764900 = 1061033^2 + 134070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143765791989 - 2⁵ = 1143765791957 is a prime.

It is a super-2 number, since 2×1143765791989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143765791939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571882895994 + 571882895995.

It is an arithmetic number, because the mean of its divisors is an integer number (571882895995).

Almost surely, 2^{1143765791989} is an apocalyptic number.

It is an amenable number.

1143765791989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143765791989 is an equidigital number, since it uses as much as digits as its factorization.

1143765791989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 70.

The spelling of 1143765791989 in words is "one trillion, one hundred forty-three billion, seven hundred sixty-five million, seven hundred ninety-one thousand, nine hundred eighty-nine".