1520032009 has 2 divisors, whose sum is σ = 1520032010. Its totient is φ = 1520032008.

The previous prime is 1520031949. The next prime is 1520032051. The reversal of 1520032009 is 9002300251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 836366400 + 683665609 = 28920^2 + 26147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520032009 - 2¹⁷ = 1519900937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1520032109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760016004 + 760016005.

It is an arithmetic number, because the mean of its divisors is an integer number (760016005).

Almost surely, 2^1520032009 is an apocalyptic number.

It is an amenable number.

1520032009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520032009 is an equidigital number, since it uses as much as digits as its factorization.

1520032009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1520032009 is about 38987.5878838381. The cubic root of 1520032009 is about 1149.7874866291.

The spelling of 1520032009 in words is "one billion, five hundred twenty million, thirty-two thousand, nine".