13789392281 has 24 divisors (see below), whose sum is σ = 16448972904. Its totient is φ = 11519262720.

The previous prime is 13789392277. The next prime is 13789392283. The reversal of 13789392281 is 18229398731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91030681 + 13698361600 = 9541^2 + 117040^2 .

It is not a de Polignac number, because 13789392281 - 2² = 13789392277 is a prime.

It is a super-2 number, since 2×13789392281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13789392283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2313401 + ... + 2319353.

It is an arithmetic number, because the mean of its divisors is an integer number (685373871).

Almost surely, 2^13789392281 is an apocalyptic number.

It is an amenable number.

13789392281 is a deficient number, since it is larger than the sum of its proper divisors (2659580623).

13789392281 is a wasteful number, since it uses less digits than its factorization.

13789392281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7161 (or 7154 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The spelling of 13789392281 in words is "thirteen billion, seven hundred eighty-nine million, three hundred ninety-two thousand, two hundred eighty-one".