152640013 has 2 divisors, whose sum is σ = 152640014. Its totient is φ = 152640012.

The previous prime is 152639959. The next prime is 152640017. The reversal of 152640013 is 310046251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149891049 + 2748964 = 12243^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 152640013 - 2²⁵ = 119085581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152640017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76320006 + 76320007.

It is an arithmetic number, because the mean of its divisors is an integer number (76320007).

Almost surely, 2^152640013 is an apocalyptic number.

It is an amenable number.

152640013 is a deficient number, since it is larger than the sum of its proper divisors (1).

152640013 is an equidigital number, since it uses as much as digits as its factorization.

152640013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 152640013 is about 12354.7566952976. The cubic root of 152640013 is about 534.4283211296.

Adding to 152640013 its reverse (310046251), we get a palindrome (462686264).

The spelling of 152640013 in words is "one hundred fifty-two million, six hundred forty thousand, thirteen".