15324706849 has 9 divisors (see below), whose sum is σ = 15531057297. Its totient is φ = 15121067364.

The previous prime is 15324706847. The next prime is 15324706853. The reversal of 15324706849 is 94860742351.

It is a happy number.

The square root of 15324706849 is 123793.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 15324706849 - 2¹ = 15324706847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15324706847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9778864 + ... + 9780430.

It is an arithmetic number, because the mean of its divisors is an integer number (1725673033).

It is a 1-persistent number, because it is pandigital, but 2⋅15324706849 = 30649413698 is not.

Almost surely, 2^15324706849 is an apocalyptic number.

15324706849 is the 123793-rd square number.

15324706849 is the 61897-th centered octagonal number.

It is an amenable number.

15324706849 is a deficient number, since it is larger than the sum of its proper divisors (206350448).

15324706849 is an frugal number, since it uses more digits than its factorization.

15324706849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292 (or 1646 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

Multiplying 15324706849 by its sum of digits (49), we get a square (750910635601 = 866551²).

The spelling of 15324706849 in words is "fifteen billion, three hundred twenty-four million, seven hundred six thousand, eight hundred forty-nine".