1296418878 has 32 divisors (see below), whose sum is σ = 3050399520. Its totient is φ = 406719360.

The previous prime is 1296418867. The next prime is 1296418901. The reversal of 1296418878 is 8788146921.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705193 + ... + 707028.

It is an arithmetic number, because the mean of its divisors is an integer number (95324985).

Almost surely, 2^1296418878 is an apocalyptic number.

1296418878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1296418878 is an abundant number, since it is smaller than the sum of its proper divisors (1753980642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1296418878 is a wasteful number, since it uses less digits than its factorization.

1296418878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412249 (or 1412243 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 1296418878 is about 36005.8172799896. The cubic root of 1296418878 is about 1090.3898047503.

The spelling of 1296418878 in words is "one billion, two hundred ninety-six million, four hundred eighteen thousand, eight hundred seventy-eight".