1080878091 has 8 divisors (see below), whose sum is σ = 1442597520. Its totient is φ = 719872032.

The previous prime is 1080878087. The next prime is 1080878119. The reversal of 1080878091 is 1908780801.

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

It is not a de Polignac number, because 1080878091 - 2² = 1080878087 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1080878291) 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, 174796 + ... + 180873.

It is an arithmetic number, because the mean of its divisors is an integer number (180324690).

Almost surely, 2^1080878091 is an apocalyptic number.

1080878091 is a deficient number, since it is larger than the sum of its proper divisors (361719429).

1080878091 is a wasteful number, since it uses less digits than its factorization.

1080878091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356685.

The product of its (nonzero) digits is 32256, while the sum is 42.

The square root of 1080878091 is about 32876.7104650085. The cubic root of 1080878091 is about 1026.2635509206.

The spelling of 1080878091 in words is "one billion, eighty million, eight hundred seventy-eight thousand, ninety-one".