1080115399 has 4 divisors (see below), whose sum is σ = 1178307720. Its totient is φ = 981923080.

The previous prime is 1080115391. The next prime is 1080115483. The reversal of 1080115399 is 9935110801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1080115399 - 2³ = 1080115391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080115391) 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, 49096144 + ... + 49096165.

It is an arithmetic number, because the mean of its divisors is an integer number (294576930).

Almost surely, 2^1080115399 is an apocalyptic number.

1080115399 is a deficient number, since it is larger than the sum of its proper divisors (98192321).

1080115399 is an equidigital number, since it uses as much as digits as its factorization.

1080115399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98192320.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 1080115399 is about 32865.1091432845. The cubic root of 1080115399 is about 1026.0221092072.

The spelling of 1080115399 in words is "one billion, eighty million, one hundred fifteen thousand, three hundred ninety-nine".