14531987109 has 4 divisors (see below), whose sum is σ = 19375982816. Its totient is φ = 9687991404.

The previous prime is 14531987101. The next prime is 14531987201. The reversal of 14531987109 is 90178913541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 14531987109 - 2³ = 14531987101 is a prime.

It is a super-2 number, since 2×14531987109² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14531987101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2421997849 + ... + 2421997854.

It is an arithmetic number, because the mean of its divisors is an integer number (4843995704).

Almost surely, 2^14531987109 is an apocalyptic number.

It is an amenable number.

14531987109 is a deficient number, since it is larger than the sum of its proper divisors (4843995707).

14531987109 is an equidigital number, since it uses as much as digits as its factorization.

14531987109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843995706.

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 14531987109 in words is "fourteen billion, five hundred thirty-one million, nine hundred eighty-seven thousand, one hundred nine".