1080781297 has 4 divisors (see below), whose sum is σ = 1080848896. Its totient is φ = 1080713700.

The previous prime is 1080781253. The next prime is 1080781327. The reversal of 1080781297 is 7921870801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080781297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080781697) 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, 5128 + ... + 46774.

It is an arithmetic number, because the mean of its divisors is an integer number (270212224).

Almost surely, 2^1080781297 is an apocalyptic number.

It is an amenable number.

1080781297 is a deficient number, since it is larger than the sum of its proper divisors (67599).

1080781297 is an equidigital number, since it uses as much as digits as its factorization.

1080781297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67598.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 1080781297 is about 32875.2383565504. The cubic root of 1080781297 is about 1026.2329156065.

The spelling of 1080781297 in words is "one billion, eighty million, seven hundred eighty-one thousand, two hundred ninety-seven".