1229875878 has 32 divisors (see below), whose sum is σ = 3066704640. Its totient is φ = 319448160.

The previous prime is 1229875853. The next prime is 1229875879. The reversal of 1229875878 is 8785789221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229875879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330573 + ... + 1331496.

It is an arithmetic number, because the mean of its divisors is an integer number (95834520).

Almost surely, 2^1229875878 is an apocalyptic number.

1229875878 is an abundant number, since it is smaller than the sum of its proper divisors (1836828762).

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

1229875878 is a wasteful number, since it uses less digits than its factorization.

1229875878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662092.

The product of its digits is 4515840, while the sum is 57.

The square root of 1229875878 is about 35069.5862251039. The cubic root of 1229875878 is about 1071.4052279816.

The spelling of 1229875878 in words is "one billion, two hundred twenty-nine million, eight hundred seventy-five thousand, eight hundred seventy-eight".