1154344397 has 2 divisors, whose sum is σ = 1154344398. Its totient is φ = 1154344396.

The previous prime is 1154344369. The next prime is 1154344423. The reversal of 1154344397 is 7934434511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087284676 + 67059721 = 32974^2 + 8189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154344397 - 2¹² = 1154340301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154344337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577172198 + 577172199.

It is an arithmetic number, because the mean of its divisors is an integer number (577172199).

Almost surely, 2^1154344397 is an apocalyptic number.

It is an amenable number.

1154344397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154344397 is an equidigital number, since it uses as much as digits as its factorization.

1154344397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 1154344397 is about 33975.6441734369. The cubic root of 1154344397 is about 1049.0071936919.

The spelling of 1154344397 in words is "one billion, one hundred fifty-four million, three hundred forty-four thousand, three hundred ninety-seven".