1097078849 has 2 divisors, whose sum is σ = 1097078850. Its totient is φ = 1097078848.

The previous prime is 1097078831. The next prime is 1097078887. The reversal of 1097078849 is 9488707901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 926593600 + 170485249 = 30440^2 + 13057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097078849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1097078849.

It is not a weakly prime, because it can be changed into another prime (1097078249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548539424 + 548539425.

It is an arithmetic number, because the mean of its divisors is an integer number (548539425).

Almost surely, 2^1097078849 is an apocalyptic number.

It is an amenable number.

1097078849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097078849 is an equidigital number, since it uses as much as digits as its factorization.

1097078849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 1097078849 is about 33122.1806196392. The cubic root of 1097078849 is about 1031.3655338499.

The spelling of 1097078849 in words is "one billion, ninety-seven million, seventy-eight thousand, eight hundred forty-nine".