1087778867 has 8 divisors (see below), whose sum is σ = 1244640096. Its totient is φ = 931283712.

The previous prime is 1087778863. The next prime is 1087778911. The reversal of 1087778867 is 7688777801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1087778867 - 2² = 1087778863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1087778863) 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, 85118 + ... + 97059.

It is an arithmetic number, because the mean of its divisors is an integer number (155580012).

Almost surely, 2^1087778867 is an apocalyptic number.

1087778867 is a deficient number, since it is larger than the sum of its proper divisors (156861229).

1087778867 is an equidigital number, since it uses as much as digits as its factorization.

1087778867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183037.

The product of its (nonzero) digits is 7375872, while the sum is 59.

The square root of 1087778867 is about 32981.4927952026. The cubic root of 1087778867 is about 1028.4429507562.

The spelling of 1087778867 in words is "one billion, eighty-seven million, seven hundred seventy-eight thousand, eight hundred sixty-seven".