1115743397 has 2 divisors, whose sum is σ = 1115743398. Its totient is φ = 1115743396.

The previous prime is 1115743393. The next prime is 1115743417. The reversal of 1115743397 is 7933475111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109622721 + 6120676 = 33311^2 + 2474^2 .

It is an emirp because it is prime and its reverse (7933475111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115743397 - 2² = 1115743393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115743393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557871698 + 557871699.

It is an arithmetic number, because the mean of its divisors is an integer number (557871699).

Almost surely, 2^1115743397 is an apocalyptic number.

It is an amenable number.

1115743397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115743397 is an equidigital number, since it uses as much as digits as its factorization.

1115743397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 41.

The square root of 1115743397 is about 33402.7453512432. The cubic root of 1115743397 is about 1037.1815319438.

The spelling of 1115743397 in words is "one billion, one hundred fifteen million, seven hundred forty-three thousand, three hundred ninety-seven".