1086861879 has 12 divisors (see below), whose sum is σ = 1571276616. Its totient is φ = 723944592.

The previous prime is 1086861863. The next prime is 1086861889. The reversal of 1086861879 is 9781686801.

1086861879 is a `hidden beast` number, since 10 + 8 + 6 + 8 + 618 + 7 + 9 = 666.

It is not a de Polignac number, because 1086861879 - 2⁴ = 1086861863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086861889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41452 + ... + 62385.

It is an arithmetic number, because the mean of its divisors is an integer number (130939718).

Almost surely, 2^1086861879 is an apocalyptic number.

1086861879 is a deficient number, since it is larger than the sum of its proper divisors (484414737).

1086861879 is a wasteful number, since it uses less digits than its factorization.

1086861879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105006 (or 105003 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 1086861879 is about 32967.5883103390. The cubic root of 1086861879 is about 1028.1538800645.

The spelling of 1086861879 in words is "one billion, eighty-six million, eight hundred sixty-one thousand, eight hundred seventy-nine".