14891493831 has 4 divisors (see below), whose sum is σ = 19855325112. Its totient is φ = 9927662552.

The previous prime is 14891493829. The next prime is 14891493853. The reversal of 14891493831 is 13839419841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14891493831 - 2¹ = 14891493829 is a prime.

It is a super-2 number, since 2×14891493831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14891493821) 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, 2481915636 + ... + 2481915641.

It is an arithmetic number, because the mean of its divisors is an integer number (4963831278).

Almost surely, 2^14891493831 is an apocalyptic number.

14891493831 is a deficient number, since it is larger than the sum of its proper divisors (4963831281).

14891493831 is an equidigital number, since it uses as much as digits as its factorization.

14891493831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963831280.

The product of its digits is 746496, while the sum is 51.

The spelling of 14891493831 in words is "fourteen billion, eight hundred ninety-one million, four hundred ninety-three thousand, eight hundred thirty-one".