18946237111045 has 8 divisors (see below), whose sum is σ = 22833061721496. Its totient is φ = 15091938230016.

The previous prime is 18946237111019. The next prime is 18946237111051. The reversal of 18946237111045 is 54011173264981.

It can be written as a sum of positive squares in 4 ways, for example, as 2316821896321 + 16629415214724 = 1522111^2 + 4077918^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18946237111045 - 2³³ = 18937647176453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18946237110983 and 18946237111001.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8131431072 + ... + 8131433401.

It is an arithmetic number, because the mean of its divisors is an integer number (2854132715187).

It is a 1-persistent number, because it is pandigital, but 2⋅18946237111045 = 37892474222090 is not.

Almost surely, 2^{18946237111045} is an apocalyptic number.

It is an amenable number.

18946237111045 is a deficient number, since it is larger than the sum of its proper divisors (3886824610451).

18946237111045 is a wasteful number, since it uses less digits than its factorization.

18946237111045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16262864711.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 18946237111045 in words is "eighteen trillion, nine hundred forty-six billion, two hundred thirty-seven million, one hundred eleven thousand, forty-five".