1234567878 has 8 divisors (see below), whose sum is σ = 2469135768. Its totient is φ = 411522624.

The previous prime is 1234567811. The next prime is 1234567891. The reversal of 1234567878 is 8787654321.

1234567878 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

1234567878 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1234567878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102880651 + ... + 102880662.

It is an arithmetic number, because the mean of its divisors is an integer number (308641971).

Almost surely, 2^1234567878 is an apocalyptic number.

1234567878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1234567878 is a wasteful number, since it uses less digits than its factorization.

1234567878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205761318.

The product of its digits is 2257920, while the sum is 51.

The square root of 1234567878 is about 35136.4181156816. The cubic root of 1234567878 is about 1072.7659761653.

The spelling of 1234567878 in words is "one billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred seventy-eight".