13492448649 has 27 divisors (see below), whose sum is σ = 20154189159. Its totient is φ = 8697836160.

The previous prime is 13492448647. The next prime is 13492448687. The reversal of 13492448649 is 94684429431.

The square root of 13492448649 is 116157.

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

13492448649 is a `hidden beast` number, since 1 + 34 + 92 + 4 + 486 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5521530249 + 7970918400 = 74307^2 + 89280^2 .

It is not a de Polignac number, because 13492448649 - 2¹ = 13492448647 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13492448595 and 13492448604.

It is not an unprimeable number, because it can be changed into a prime (13492448647) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10801977 + ... + 10803225.

Almost surely, 2^13492448649 is an apocalyptic number.

13492448649 is the 116157-th square number.

13492448649 is the 58079-th centered octagonal number.

It is an amenable number.

13492448649 is a deficient number, since it is larger than the sum of its proper divisors (6661740510).

13492448649 is an frugal number, since it uses more digits than its factorization.

13492448649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 1283 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 13492448649 in words is "thirteen billion, four hundred ninety-two million, four hundred forty-eight thousand, six hundred forty-nine".