1117952389 has 2 divisors, whose sum is σ = 1117952390. Its totient is φ = 1117952388.

The previous prime is 1117952369. The next prime is 1117952393. The reversal of 1117952389 is 9832597111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719151489 + 398800900 = 26817^2 + 19970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117952389 - 2⁷ = 1117952261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117952309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558976194 + 558976195.

It is an arithmetic number, because the mean of its divisors is an integer number (558976195).

Almost surely, 2^1117952389 is an apocalyptic number.

It is an amenable number.

1117952389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117952389 is an equidigital number, since it uses as much as digits as its factorization.

1117952389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 46.

The square root of 1117952389 is about 33435.7950256907. The cubic root of 1117952389 is about 1037.8655647760.

The spelling of 1117952389 in words is "one billion, one hundred seventeen million, nine hundred fifty-two thousand, three hundred eighty-nine".