1086878557 has 4 divisors (see below), whose sum is σ = 1097430880. Its totient is φ = 1076326236.

The previous prime is 1086878537. The next prime is 1086878581. The reversal of 1086878557 is 7558786801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1086878557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1086878498 and 1086878507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086878537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5276007 + ... + 5276212.

It is an arithmetic number, because the mean of its divisors is an integer number (274357720).

Almost surely, 2^1086878557 is an apocalyptic number.

It is an amenable number.

1086878557 is a deficient number, since it is larger than the sum of its proper divisors (10552323).

1086878557 is a wasteful number, since it uses less digits than its factorization.

1086878557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10552322.

The product of its (nonzero) digits is 3763200, while the sum is 55.

The square root of 1086878557 is about 32967.8412547743. The cubic root of 1086878557 is about 1028.1591390776.

The spelling of 1086878557 in words is "one billion, eighty-six million, eight hundred seventy-eight thousand, five hundred fifty-seven".