1143964763 has 4 divisors (see below), whose sum is σ = 1144032480. Its totient is φ = 1143897048.

The previous prime is 1143964753. The next prime is 1143964771. The reversal of 1143964763 is 3674693411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1143964763 - 2¹⁰ = 1143963739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143964753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14606 + ... + 50012.

It is an arithmetic number, because the mean of its divisors is an integer number (286008120).

Almost surely, 2^1143964763 is an apocalyptic number.

1143964763 is a deficient number, since it is larger than the sum of its proper divisors (67717).

1143964763 is an equidigital number, since it uses as much as digits as its factorization.

1143964763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67716.

The product of its digits is 326592, while the sum is 44.

The square root of 1143964763 is about 33822.5481446919. The cubic root of 1143964763 is about 1045.8535681522.

The spelling of 1143964763 in words is "one billion, one hundred forty-three million, nine hundred sixty-four thousand, seven hundred sixty-three".