1080365899 has 4 divisors (see below), whose sum is σ = 1080433440. Its totient is φ = 1080298360.

The previous prime is 1080365893. The next prime is 1080365911. The reversal of 1080365899 is 9985630801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9985630801 = 227 ⋅43989563.

It is a cyclic number.

It is not a de Polignac number, because 1080365899 - 2¹⁵ = 1080333131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080365893) 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, 5262 + ... + 46780.

It is an arithmetic number, because the mean of its divisors is an integer number (270108360).

Almost surely, 2^1080365899 is an apocalyptic number.

1080365899 is a deficient number, since it is larger than the sum of its proper divisors (67541).

1080365899 is an equidigital number, since it uses as much as digits as its factorization.

1080365899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67540.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1080365899 is about 32868.9199548753. The cubic root of 1080365899 is about 1026.1014213103.

The spelling of 1080365899 in words is "one billion, eighty million, three hundred sixty-five thousand, eight hundred ninety-nine".