16318274049 has 135 divisors (see below), whose sum is σ = 30612154209. Its totient is φ = 8369721360.

The previous prime is 16318273997. The next prime is 16318274081. The reversal of 16318274049 is 94047281361.

The square root of 16318274049 is 127743.

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

16318274049 is a `hidden beast` number, since 1 + 63 + 182 + 7 + 404 + 9 = 666.

It is not a de Polignac number, because 16318274049 - 2⁹ = 16318273537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16318273995 and 16318274013.

It is not an unprimeable number, because it can be changed into a prime (16318674049) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 206560392 + ... + 206560470.

Almost surely, 2^16318274049 is an apocalyptic number.

16318274049 is the 127743-rd square number.

16318274049 is the 63872-nd centered octagonal number.

It is an amenable number.

16318274049 is a deficient number, since it is larger than the sum of its proper divisors (14293880160).

16318274049 is an frugal number, since it uses more digits than its factorization.

16318274049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 100 counting only the distinct ones).

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

The spelling of 16318274049 in words is "sixteen billion, three hundred eighteen million, two hundred seventy-four thousand, forty-nine".