1047816878 has 4 divisors (see below), whose sum is σ = 1571725320. Its totient is φ = 523908438.

The previous prime is 1047816877. The next prime is 1047816907. The reversal of 1047816878 is 8786187401.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047816877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261954218 + ... + 261954221.

It is an arithmetic number, because the mean of its divisors is an integer number (392931330).

Almost surely, 2^1047816878 is an apocalyptic number.

1047816878 is a deficient number, since it is larger than the sum of its proper divisors (523908442).

1047816878 is an equidigital number, since it uses as much as digits as its factorization.

1047816878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523908441.

The product of its (nonzero) digits is 602112, while the sum is 50.

The square root of 1047816878 is about 32369.9996601792. Note that the first 3 decimals coincide. The cubic root of 1047816878 is about 1015.6914498762.

The spelling of 1047816878 in words is "one billion, forty-seven million, eight hundred sixteen thousand, eight hundred seventy-eight".