1153821349 has 2 divisors, whose sum is σ = 1153821350. Its totient is φ = 1153821348.

The previous prime is 1153821337. The next prime is 1153821367. The reversal of 1153821349 is 9431283511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888457249 + 265364100 = 29807^2 + 16290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153821349 - 2²³ = 1145432741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153821329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576910674 + 576910675.

It is an arithmetic number, because the mean of its divisors is an integer number (576910675).

Almost surely, 2^1153821349 is an apocalyptic number.

It is an amenable number.

1153821349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153821349 is an equidigital number, since it uses as much as digits as its factorization.

1153821349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 1153821349 is about 33967.9459049263. The cubic root of 1153821349 is about 1048.8487302938.

The spelling of 1153821349 in words is "one billion, one hundred fifty-three million, eight hundred twenty-one thousand, three hundred forty-nine".