18959444022834 has 192 divisors, whose sum is σ = 49567645670400. Its totient is φ = 5116368157056.

The previous prime is 18959444022833. The next prime is 18959444022839. The reversal of 18959444022834 is 43822044495981.

It is a happy number.

18959444022834 is a `hidden beast` number, since 1 + 8 + 9 + 5 + 94 + 440 + 22 + 83 + 4 = 666.

It is a super-2 number, since 2×18959444022834² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (18959444022833) 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 95 ways as a sum of consecutive naturals, for example, 1547324652 + ... + 1547336904.

It is an arithmetic number, because the mean of its divisors is an integer number (258164821200).

Almost surely, 2^{18959444022834} is an apocalyptic number.

18959444022834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18959444022834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24783822835200).

18959444022834 is an abundant number, since it is smaller than the sum of its proper divisors (30608201647566).

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

18959444022834 is a wasteful number, since it uses less digits than its factorization.

18959444022834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14189 (or 14186 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 18959444022834 in words is "eighteen trillion, nine hundred fifty-nine billion, four hundred forty-four million, twenty-two thousand, eight hundred thirty-four".