13149381447 has 6 divisors (see below), whose sum is σ = 18993550992. Its totient is φ = 8766254292.

The previous prime is 13149381361. The next prime is 13149381457. The reversal of 13149381447 is 74418394131.

It is a happy number.

13149381447 is a `hidden beast` number, since 13 + 1 + 493 + 8 + 144 + 7 = 666.

It is not a de Polignac number, because 13149381447 - 2²⁴ = 13132604231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149381457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 730521183 + ... + 730521200.

It is an arithmetic number, because the mean of its divisors is an integer number (3165591832).

Almost surely, 2^13149381447 is an apocalyptic number.

13149381447 is a deficient number, since it is larger than the sum of its proper divisors (5844169545).

13149381447 is a wasteful number, since it uses less digits than its factorization.

13149381447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461042389 (or 1461042386 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 13149381447 in words is "thirteen billion, one hundred forty-nine million, three hundred eighty-one thousand, four hundred forty-seven".