1011862878 has 32 divisors (see below), whose sum is σ = 2249705472. Its totient is φ = 301298400.

The previous prime is 1011862829. The next prime is 1011862931. The reversal of 1011862878 is 8782681101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206818 + ... + 211653.

It is an arithmetic number, because the mean of its divisors is an integer number (70303296).

Almost surely, 2^1011862878 is an apocalyptic number.

1011862878 is an abundant number, since it is smaller than the sum of its proper divisors (1237842594).

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

1011862878 is a wasteful number, since it uses less digits than its factorization.

1011862878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418520.

The product of its (nonzero) digits is 43008, while the sum is 42.

The square root of 1011862878 is about 31809.7921715940. The cubic root of 1011862878 is about 1003.9387584799.

The spelling of 1011862878 in words is "one billion, eleven million, eight hundred sixty-two thousand, eight hundred seventy-eight".