1080965391 has 8 divisors (see below), whose sum is σ = 1572313344. Its totient is φ = 655130520.

The previous prime is 1080965371. The next prime is 1080965399. The reversal of 1080965391 is 1935690801.

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

It is not a de Polignac number, because 1080965391 - 2⁵ = 1080965359 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080965399) 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, 16378231 + ... + 16378296.

It is an arithmetic number, because the mean of its divisors is an integer number (196539168).

Almost surely, 2^1080965391 is an apocalyptic number.

1080965391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1080965391 is a deficient number, since it is larger than the sum of its proper divisors (491347953).

1080965391 is a wasteful number, since it uses less digits than its factorization.

1080965391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32756541.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1080965391 is about 32878.0381257763. The cubic root of 1080965391 is about 1026.2911798138.

The spelling of 1080965391 in words is "one billion, eighty million, nine hundred sixty-five thousand, three hundred ninety-one".