1260152878 has 4 divisors (see below), whose sum is σ = 1890229320. Its totient is φ = 630076438.

The previous prime is 1260152849. The next prime is 1260152893. The reversal of 1260152878 is 8782510621.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1260152878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315038218 + ... + 315038221.

It is an arithmetic number, because the mean of its divisors is an integer number (472557330).

Almost surely, 2^1260152878 is an apocalyptic number.

1260152878 is a deficient number, since it is larger than the sum of its proper divisors (630076442).

1260152878 is an equidigital number, since it uses as much as digits as its factorization.

1260152878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630076441.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 1260152878 is about 35498.6320581512. The cubic root of 1260152878 is about 1080.1259792457.

The spelling of 1260152878 in words is "one billion, two hundred sixty million, one hundred fifty-two thousand, eight hundred seventy-eight".