18067748647 has 16 divisors (see below), whose sum is σ = 20852314560. Its totient is φ = 15521628672.

The previous prime is 18067748639. The next prime is 18067748669. The reversal of 18067748647 is 74684776081.

It is a cyclic number.

It is not a de Polignac number, because 18067748647 - 2³ = 18067748639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18067748591 and 18067748600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18067748627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805522 + ... + 827647.

It is an arithmetic number, because the mean of its divisors is an integer number (1303269660).

Almost surely, 2^18067748647 is an apocalyptic number.

18067748647 is a deficient number, since it is larger than the sum of its proper divisors (2784565913).

18067748647 is a wasteful number, since it uses less digits than its factorization.

18067748647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633242.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 18067748647 in words is "eighteen billion, sixty-seven million, seven hundred forty-eight thousand, six hundred forty-seven".