18604061826 has 64 divisors (see below), whose sum is σ = 45641864448. Its totient is φ = 4934227968.

The previous prime is 18604061821. The next prime is 18604061849. The reversal of 18604061826 is 62816040681.

It is a super-2 number, since 2×18604061826² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (18604061821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126345 + ... + 230588.

It is an arithmetic number, because the mean of its divisors is an integer number (713154132).

Almost surely, 2^18604061826 is an apocalyptic number.

18604061826 is an abundant number, since it is smaller than the sum of its proper divisors (27037802622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18604061826 is a wasteful number, since it uses less digits than its factorization.

18604061826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357035.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 18604061826 in words is "eighteen billion, six hundred four million, sixty-one thousand, eight hundred twenty-six".