1085866278 has 16 divisors (see below), whose sum is σ = 2481980160. Its totient is φ = 310247496.

The previous prime is 1085866277. The next prime is 1085866291. The reversal of 1085866278 is 8726685801.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1085866278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085866277) 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, 12926938 + ... + 12927021.

It is an arithmetic number, because the mean of its divisors is an integer number (155123760).

Almost surely, 2^1085866278 is an apocalyptic number.

1085866278 is an abundant number, since it is smaller than the sum of its proper divisors (1396113882).

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

1085866278 is a wasteful number, since it uses less digits than its factorization.

1085866278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25853971.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 1085866278 is about 32952.4851566616. The cubic root of 1085866278 is about 1027.8398433041.

The spelling of 1085866278 in words is "one billion, eighty-five million, eight hundred sixty-six thousand, two hundred seventy-eight".