1115899373 has 2 divisors, whose sum is σ = 1115899374. Its totient is φ = 1115899372.

The previous prime is 1115899357. The next prime is 1115899399. The reversal of 1115899373 is 3739985111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570349924 + 545549449 = 23882^2 + 23357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115899373 - 2⁴ = 1115899357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115898373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557949686 + 557949687.

It is an arithmetic number, because the mean of its divisors is an integer number (557949687).

Almost surely, 2^1115899373 is an apocalyptic number.

It is an amenable number.

1115899373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115899373 is an equidigital number, since it uses as much as digits as its factorization.

1115899373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 47.

The square root of 1115899373 is about 33405.0800478011. The cubic root of 1115899373 is about 1037.2298608245.

The spelling of 1115899373 in words is "one billion, one hundred fifteen million, eight hundred ninety-nine thousand, three hundred seventy-three".