1049155878 has 16 divisors (see below), whose sum is σ = 2165999616. Its totient is φ = 338437320.

The previous prime is 1049155871. The next prime is 1049155903. The reversal of 1049155878 is 8785519401.

It is a happy number.

1049155878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1049155878² = 2201456112683901768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049155871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820126 + ... + 2820497.

It is an arithmetic number, because the mean of its divisors is an integer number (135374976).

Almost surely, 2^1049155878 is an apocalyptic number.

1049155878 is an abundant number, since it is smaller than the sum of its proper divisors (1116843738).

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

1049155878 is a wasteful number, since it uses less digits than its factorization.

1049155878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640659.

The product of its (nonzero) digits is 403200, while the sum is 48.

The square root of 1049155878 is about 32390.6757879486. The cubic root of 1049155878 is about 1016.1239147384.

The spelling of 1049155878 in words is "one billion, forty-nine million, one hundred fifty-five thousand, eight hundred seventy-eight".