1143963697 has 2 divisors, whose sum is σ = 1143963698. Its totient is φ = 1143963696.

The previous prime is 1143963671. The next prime is 1143963703. The reversal of 1143963697 is 7963693411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1059893136 + 84070561 = 32556^2 + 9169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143963697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143963697.

It is not a weakly prime, because it can be changed into another prime (1143961697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571981848 + 571981849.

It is an arithmetic number, because the mean of its divisors is an integer number (571981849).

Almost surely, 2^1143963697 is an apocalyptic number.

It is an amenable number.

1143963697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143963697 is an equidigital number, since it uses as much as digits as its factorization.

1143963697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 49.

The square root of 1143963697 is about 33822.5323859702. The cubic root of 1143963697 is about 1045.8532432936.

It can be divided in two parts, 1143963 and 697, that multiplied together give a triangular number (797342211 = T₃₉₉₃₃).

The spelling of 1143963697 in words is "one billion, one hundred forty-three million, nine hundred sixty-three thousand, six hundred ninety-seven".