18087354043929 has 45 divisors (see below), whose sum is σ = 27101220919311. Its totient is φ = 12021822502560.

The previous prime is 18087354043919. The next prime is 18087354043933. The reversal of 18087354043929 is 92934045378081.

The square root of 18087354043929 is 4252923.

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

18087354043929 is a `hidden beast` number, since 1 + 8 + 0 + 87 + 3 + 540 + 4 + 3 + 9 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5186901485529 + 12900452558400 = 2277477^2 + 3591720^2 .

It is not a de Polignac number, because 18087354043929 - 2¹¹ = 18087354041881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18087354043919) by changing a digit.

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 44 ways as a sum of consecutive naturals, for example, 19941955494 + ... + 19941956400.

Almost surely, 2^{18087354043929} is an apocalyptic number.

18087354043929 is the 4252923-rd square number.

18087354043929 is the 2126462-nd centered octagonal number.

It is an amenable number.

18087354043929 is a deficient number, since it is larger than the sum of its proper divisors (9013866875382).

18087354043929 is an frugal number, since it uses more digits than its factorization.

18087354043929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 18087354043929 in words is "eighteen trillion, eighty-seven billion, three hundred fifty-four million, forty-three thousand, nine hundred twenty-nine".