1500240409 has 2 divisors, whose sum is σ = 1500240410. Its totient is φ = 1500240408.

The previous prime is 1500240403. The next prime is 1500240431. The reversal of 1500240409 is 9040420051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1497690000 + 2550409 = 38700^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1500240409 - 2⁷ = 1500240281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1500240403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750120204 + 750120205.

It is an arithmetic number, because the mean of its divisors is an integer number (750120205).

Almost surely, 2^1500240409 is an apocalyptic number.

It is an amenable number.

1500240409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1500240409 is an equidigital number, since it uses as much as digits as its factorization.

1500240409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1500240409 is about 38732.9370045702. The cubic root of 1500240409 is about 1144.7753947545.

The spelling of 1500240409 in words is "one billion, five hundred million, two hundred forty thousand, four hundred nine".