153216493 has 2 divisors, whose sum is σ = 153216494. Its totient is φ = 153216492.

The previous prime is 153216487. The next prime is 153216607. The reversal of 153216493 is 394612351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104816644 + 48399849 = 10238^2 + 6957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153216493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153216463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76608246 + 76608247.

It is an arithmetic number, because the mean of its divisors is an integer number (76608247).

Almost surely, 2^153216493 is an apocalyptic number.

It is an amenable number.

153216493 is a deficient number, since it is larger than the sum of its proper divisors (1).

153216493 is an equidigital number, since it uses as much as digits as its factorization.

153216493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 34.

The square root of 153216493 is about 12378.0649941742. The cubic root of 153216493 is about 535.1002729336.

The spelling of 153216493 in words is "one hundred fifty-three million, two hundred sixteen thousand, four hundred ninety-three".