18380826900859 has 16 divisors (see below), whose sum is σ = 19123444660320. Its totient is φ = 17645500615680.

The previous prime is 18380826900853. The next prime is 18380826900913. The reversal of 18380826900859 is 95800962808381.

It is a cyclic number.

It is not a de Polignac number, because 18380826900859 - 2³ = 18380826900851 is a prime.

It is a super-2 number, since 2×18380826900859² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18380826900794 and 18380826900803.

It is not an unprimeable number, because it can be changed into a prime (18380826900851) 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, 26676427 + ... + 27356779.

It is an arithmetic number, because the mean of its divisors is an integer number (1195215291270).

Almost surely, 2^{18380826900859} is an apocalyptic number.

18380826900859 is a deficient number, since it is larger than the sum of its proper divisors (742617759461).

18380826900859 is a wasteful number, since it uses less digits than its factorization.

18380826900859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685710.

The product of its (nonzero) digits is 59719680, while the sum is 67.

The spelling of 18380826900859 in words is "eighteen trillion, three hundred eighty billion, eight hundred twenty-six million, nine hundred thousand, eight hundred fifty-nine".