1154231249 has 2 divisors, whose sum is σ = 1154231250. Its totient is φ = 1154231248.

The previous prime is 1154231237. The next prime is 1154231257. The reversal of 1154231249 is 9421324511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686806849 + 467424400 = 26207^2 + 21620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154231249 is a prime.

It is a super-3 number, since 3×1154231249³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1154239249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577115624 + 577115625.

It is an arithmetic number, because the mean of its divisors is an integer number (577115625).

Almost surely, 2^1154231249 is an apocalyptic number.

It is an amenable number.

1154231249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154231249 is an equidigital number, since it uses as much as digits as its factorization.

1154231249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1154231249 is about 33973.9789986395. The cubic root of 1154231249 is about 1048.9729182640.

The spelling of 1154231249 in words is "one billion, one hundred fifty-four million, two hundred thirty-one thousand, two hundred forty-nine".