1283196778 has 16 divisors (see below), whose sum is σ = 1977865344. Its totient is φ = 623926800.

The previous prime is 1283196767. The next prime is 1283196781. The reversal of 1283196778 is 8776913821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192603 + ... + 199153.

It is an arithmetic number, because the mean of its divisors is an integer number (123616584).

Almost surely, 2^1283196778 is an apocalyptic number.

1283196778 is a deficient number, since it is larger than the sum of its proper divisors (694668566).

1283196778 is a wasteful number, since it uses less digits than its factorization.

1283196778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9237.

The product of its digits is 1016064, while the sum is 52.

The square root of 1283196778 is about 35821.7361109146. The cubic root of 1283196778 is about 1086.6701900388.

The spelling of 1283196778 in words is "one billion, two hundred eighty-three million, one hundred ninety-six thousand, seven hundred seventy-eight".