18518351741 has 16 divisors (see below), whose sum is σ = 19252794240. Its totient is φ = 17797579200.

The previous prime is 18518351707. The next prime is 18518351743. The reversal of 18518351741 is 14715381581.

It is a cyclic number.

It is not a de Polignac number, because 18518351741 - 2²² = 18514157437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18518351692 and 18518351701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18518351743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 990815 + ... + 1009331.

It is an arithmetic number, because the mean of its divisors is an integer number (1203299640).

Almost surely, 2^18518351741 is an apocalyptic number.

It is an amenable number.

18518351741 is a deficient number, since it is larger than the sum of its proper divisors (734442499).

18518351741 is a wasteful number, since it uses less digits than its factorization.

18518351741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18884.

The product of its digits is 134400, while the sum is 44.

The spelling of 18518351741 in words is "eighteen billion, five hundred eighteen million, three hundred fifty-one thousand, seven hundred forty-one".