18989023796754 has 128 divisors (see below), whose sum is σ = 44774840033280. Its totient is φ = 5311827225600.

The previous prime is 18989023796689. The next prime is 18989023796789. The reversal of 18989023796754 is 45769732098981.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18989023796754.

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 63 ways as a sum of consecutive naturals, for example, 2996794 + ... + 6852650.

It is an arithmetic number, because the mean of its divisors is an integer number (349803437760).

It is a 1-persistent number, because it is pandigital, but 2⋅18989023796754 = 37978047593508 is not.

Almost surely, 2^{18989023796754} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18989023796754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22387420016640).

18989023796754 is an abundant number, since it is smaller than the sum of its proper divisors (25785816236526).

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

18989023796754 is a wasteful number, since it uses less digits than its factorization.

18989023796754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856016.

The product of its (nonzero) digits is 1646023680, while the sum is 78.

The spelling of 18989023796754 in words is "eighteen trillion, nine hundred eighty-nine billion, twenty-three million, seven hundred ninety-six thousand, seven hundred fifty-four".