18001741005 has 12 divisors (see below), whose sum is σ = 31203017820. Its totient is φ = 9600928512.

The previous prime is 18001740979. The next prime is 18001741019. The reversal of 18001741005 is 50014710081.

It can be written as a sum of positive squares in 2 ways, for example, as 6338388996 + 11663352009 = 79614^2 + 107997^2 .

It is not a de Polignac number, because 18001741005 - 2¹³ = 18001732813 is a prime.

It is a super-2 number, since 2×18001741005² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18001741005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200019300 + ... + 200019389.

It is an arithmetic number, because the mean of its divisors is an integer number (2600251485).

Almost surely, 2^18001741005 is an apocalyptic number.

18001741005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18001741005 is a deficient number, since it is larger than the sum of its proper divisors (13201276815).

18001741005 is a wasteful number, since it uses less digits than its factorization.

18001741005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400038700 (or 400038697 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The spelling of 18001741005 in words is "eighteen billion, one million, seven hundred forty-one thousand, five".