18318573061 has 16 divisors (see below), whose sum is σ = 19044083520. Its totient is φ = 17607784320.

The previous prime is 18318573059. The next prime is 18318573067. The reversal of 18318573061 is 16037581381.

It is a cyclic number.

It is not a de Polignac number, because 18318573061 - 2¹ = 18318573059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18318572999 and 18318573017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18318573067) 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, 1440750 + ... + 1453408.

It is an arithmetic number, because the mean of its divisors is an integer number (1190255220).

Almost surely, 2^18318573061 is an apocalyptic number.

It is an amenable number.

18318573061 is a deficient number, since it is larger than the sum of its proper divisors (725510459).

18318573061 is a wasteful number, since it uses less digits than its factorization.

18318573061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13236.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 18318573061 in words is "eighteen billion, three hundred eighteen million, five hundred seventy-three thousand, sixty-one".