1109788297 has 2 divisors, whose sum is σ = 1109788298. Its totient is φ = 1109788296.

The previous prime is 1109788279. The next prime is 1109788301. The reversal of 1109788297 is 7928879011.

Together with previous prime (1109788279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1072955536 + 36832761 = 32756^2 + 6069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109788297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109758297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554894148 + 554894149.

It is an arithmetic number, because the mean of its divisors is an integer number (554894149).

Almost surely, 2^1109788297 is an apocalyptic number.

It is an amenable number.

1109788297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109788297 is an equidigital number, since it uses as much as digits as its factorization.

1109788297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 52.

The square root of 1109788297 is about 33313.4852124481. The cubic root of 1109788297 is about 1035.3329763282.

The spelling of 1109788297 in words is "one billion, one hundred nine million, seven hundred eighty-eight thousand, two hundred ninety-seven".