15299958249 has 9 divisors (see below), whose sum is σ = 22100475709. Its totient is φ = 10199724780.

The previous prime is 15299958229. The next prime is 15299958253. The reversal of 15299958249 is 94285999251.

The square root of 15299958249 is 123693.

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

15299958249 is a `hidden beast` number, since 1 + 5 + 2 + 9 + 9 + 9 + 582 + 49 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 15299958249 - 2⁵ = 15299958217 is a prime.

It is a super-2 number, since 2×15299958249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15299958229) 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, 350464 + ... + 391694.

Almost surely, 2^15299958249 is an apocalyptic number.

15299958249 is the 123693-rd square number.

15299958249 is the 61847-th centered octagonal number.

It is an amenable number.

15299958249 is a deficient number, since it is larger than the sum of its proper divisors (6800517460).

15299958249 is an frugal number, since it uses more digits than its factorization.

15299958249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82468 (or 41234 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 63.

The spelling of 15299958249 in words is "fifteen billion, two hundred ninety-nine million, nine hundred fifty-eight thousand, two hundred forty-nine".