1080771999 has 4 divisors (see below), whose sum is σ = 1441029336. Its totient is φ = 720514664.

The previous prime is 1080771977. The next prime is 1080772027. The reversal of 1080771999 is 9991770801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9991770801 = 3 ⋅3330590267.

It is a cyclic number.

It is not a de Polignac number, because 1080771999 - 2⁷ = 1080771871 is a prime.

It is a super-2 number, since 2×1080771999² = 2336136227644912002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080771929) 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, 180128664 + ... + 180128669.

It is an arithmetic number, because the mean of its divisors is an integer number (360257334).

Almost surely, 2^1080771999 is an apocalyptic number.

1080771999 is a deficient number, since it is larger than the sum of its proper divisors (360257337).

1080771999 is an equidigital number, since it uses as much as digits as its factorization.

1080771999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360257336.

The product of its (nonzero) digits is 285768, while the sum is 51.

The square root of 1080771999 is about 32875.0969428228. The cubic root of 1080771999 is about 1026.2299726919.

The spelling of 1080771999 in words is "one billion, eighty million, seven hundred seventy-one thousand, nine hundred ninety-nine".