1139210878 has 16 divisors (see below), whose sum is σ = 1899628416. Its totient is φ = 508828320.

The previous prime is 1139210837. The next prime is 1139210921. The reversal of 1139210878 is 8780129311.

It is a self number, because there is not a number n which added to its sum of digits gives 1139210878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705901 + ... + 707512.

It is an arithmetic number, because the mean of its divisors is an integer number (118726776).

Almost surely, 2^1139210878 is an apocalyptic number.

1139210878 is a deficient number, since it is larger than the sum of its proper divisors (760417538).

1139210878 is a wasteful number, since it uses less digits than its factorization.

1139210878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413459.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 1139210878 is about 33752.1981210113. The cubic root of 1139210878 is about 1044.4028327326.

The spelling of 1139210878 in words is "one billion, one hundred thirty-nine million, two hundred ten thousand, eight hundred seventy-eight".