1263822878 has 16 divisors (see below), whose sum is σ = 1905817680. Its totient is φ = 628560000.

The previous prime is 1263822869. The next prime is 1263822887. The reversal of 1263822878 is 8782283621.

It is an interprime number because it is at equal distance from previous prime (1263822869) and next prime (1263822887).

It is a congruent number.

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, 309953 + ... + 314003.

It is an arithmetic number, because the mean of its divisors is an integer number (119113605).

Almost surely, 2^1263822878 is an apocalyptic number.

1263822878 is a deficient number, since it is larger than the sum of its proper divisors (641994802).

1263822878 is a wasteful number, since it uses less digits than its factorization.

1263822878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843.

The product of its digits is 516096, while the sum is 47.

The square root of 1263822878 is about 35550.2866092525. The cubic root of 1263822878 is about 1081.1735294777.

The spelling of 1263822878 in words is "one billion, two hundred sixty-three million, eight hundred twenty-two thousand, eight hundred seventy-eight".