18889377026745 has 16 divisors (see below), whose sum is σ = 30223204307712. Its totient is φ = 10074267392640.

The previous prime is 18889377026743. The next prime is 18889377026791. The reversal of 18889377026745 is 54762077398881.

It is not a de Polignac number, because 18889377026745 - 2¹ = 18889377026743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18889377026743) 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, 1815601 + ... + 6408990.

It is an arithmetic number, because the mean of its divisors is an integer number (1888950269232).

It is a 1-persistent number, because it is pandigital, but 2⋅18889377026745 = 37778754053490 is not.

Almost surely, 2^{18889377026745} is an apocalyptic number.

18889377026745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18889377026745 is a deficient number, since it is larger than the sum of its proper divisors (11333827280967).

18889377026745 is a wasteful number, since it uses less digits than its factorization.

18889377026745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377712.

The product of its (nonzero) digits is 1137991680, while the sum is 75.

The spelling of 18889377026745 in words is "eighteen trillion, eight hundred eighty-nine billion, three hundred seventy-seven million, twenty-six thousand, seven hundred forty-five".