15284920493 has 2 divisors, whose sum is σ = 15284920494. Its totient is φ = 15284920492.

The previous prime is 15284920477. The next prime is 15284920501. The reversal of 15284920493 is 39402948251.

It is a happy number.

15284920493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12980728489 + 2304192004 = 113933^2 + 48002^2 .

It is an emirp because it is prime and its reverse (39402948251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15284920493 - 2⁴ = 15284920477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15284920433) 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, 7642460246 + 7642460247.

It is an arithmetic number, because the mean of its divisors is an integer number (7642460247).

Almost surely, 2^15284920493 is an apocalyptic number.

It is an amenable number.

15284920493 is a deficient number, since it is larger than the sum of its proper divisors (1).

15284920493 is an equidigital number, since it uses as much as digits as its factorization.

15284920493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 15284920493 in words is "fifteen billion, two hundred eighty-four million, nine hundred twenty thousand, four hundred ninety-three".