1153440269 has 2 divisors, whose sum is σ = 1153440270. Its totient is φ = 1153440268.

The previous prime is 1153440241. The next prime is 1153440283. The reversal of 1153440269 is 9620443511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1067655625 + 85784644 = 32675^2 + 9262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153440269 - 2²⁰ = 1152391693 is a prime.

It is a super-2 number, since 2×1153440269² = 2660848908301584722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153440469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576720134 + 576720135.

It is an arithmetic number, because the mean of its divisors is an integer number (576720135).

Almost surely, 2^1153440269 is an apocalyptic number.

It is an amenable number.

1153440269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153440269 is an equidigital number, since it uses as much as digits as its factorization.

1153440269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1153440269 is about 33962.3360356734. The cubic root of 1153440269 is about 1048.7332475732.

The spelling of 1153440269 in words is "one billion, one hundred fifty-three million, four hundred forty thousand, two hundred sixty-nine".