1283796863 has 4 divisors (see below), whose sum is σ = 1313652648. Its totient is φ = 1253941080.

The previous prime is 1283796827. The next prime is 1283796887. The reversal of 1283796863 is 3686973821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1283796863 - 2⁶ = 1283796799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283796823) 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, 14927828 + ... + 14927913.

It is an arithmetic number, because the mean of its divisors is an integer number (328413162).

Almost surely, 2^1283796863 is an apocalyptic number.

1283796863 is a deficient number, since it is larger than the sum of its proper divisors (29855785).

1283796863 is an equidigital number, since it uses as much as digits as its factorization.

1283796863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29855784.

The product of its digits is 2612736, while the sum is 53.

The square root of 1283796863 is about 35830.1111217925. Note that the first 4 decimals coincide. The cubic root of 1283796863 is about 1086.8395568546.

The spelling of 1283796863 in words is "one billion, two hundred eighty-three million, seven hundred ninety-six thousand, eight hundred sixty-three".