1521133349 has 2 divisors, whose sum is σ = 1521133350. Its totient is φ = 1521133348.

The previous prime is 1521133343. The next prime is 1521133373. The reversal of 1521133349 is 9433311251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023040225 + 498093124 = 31985^2 + 22318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521133349 - 2²⁰ = 1520084773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521133343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760566674 + 760566675.

It is an arithmetic number, because the mean of its divisors is an integer number (760566675).

Almost surely, 2^1521133349 is an apocalyptic number.

It is an amenable number.

1521133349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521133349 is an equidigital number, since it uses as much as digits as its factorization.

1521133349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 1521133349 is about 39001.7095650947. The cubic root of 1521133349 is about 1150.0651126334.

The spelling of 1521133349 in words is "one billion, five hundred twenty-one million, one hundred thirty-three thousand, three hundred forty-nine".