1154155229 has 2 divisors, whose sum is σ = 1154155230. Its totient is φ = 1154155228.

The previous prime is 1154155183. The next prime is 1154155237. The reversal of 1154155229 is 9225514511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762036025 + 392119204 = 27605^2 + 19802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154155229 - 2¹² = 1154151133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154155259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577077614 + 577077615.

It is an arithmetic number, because the mean of its divisors is an integer number (577077615).

Almost surely, 2^1154155229 is an apocalyptic number.

It is an amenable number.

1154155229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154155229 is an equidigital number, since it uses as much as digits as its factorization.

1154155229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 35.

The square root of 1154155229 is about 33972.8601827989. The cubic root of 1154155229 is about 1048.9498886005.

The spelling of 1154155229 in words is "one billion, one hundred fifty-four million, one hundred fifty-five thousand, two hundred twenty-nine".