13234891849 has 9 divisors (see below), whose sum is σ = 13710460647. Its totient is φ = 12775295064.

The previous prime is 13234891847. The next prime is 13234891877. The reversal of 13234891849 is 94819843231.

The square root of 13234891849 is 115043.

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

It can be written as a sum of positive squares in only one way, i.e., 6940056249 + 6294835600 = 83307^2 + 79340^2 .

It is not a de Polignac number, because 13234891849 - 2¹ = 13234891847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13234891796 and 13234891805.

It is not an unprimeable number, because it can be changed into a prime (13234891841) 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, 3334264 + ... + 3338230.

Almost surely, 2^13234891849 is an apocalyptic number.

13234891849 is the 115043-rd square number.

13234891849 is the 57522-nd centered octagonal number.

It is an amenable number.

13234891849 is a deficient number, since it is larger than the sum of its proper divisors (475568798).

13234891849 is an frugal number, since it uses more digits than its factorization.

13234891849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992 (or 3996 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The spelling of 13234891849 in words is "thirteen billion, two hundred thirty-four million, eight hundred ninety-one thousand, eight hundred forty-nine".