18454396189773 has 4 divisors (see below), whose sum is σ = 24605861586368. Its totient is φ = 12302930793180.

The previous prime is 18454396189769. The next prime is 18454396189777. The reversal of 18454396189773 is 37798169345481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (18454396189769) and next prime (18454396189777).

It is not a de Polignac number, because 18454396189773 - 2² = 18454396189769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18454396189695 and 18454396189704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18454396189777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075732698293 + ... + 3075732698298.

It is an arithmetic number, because the mean of its divisors is an integer number (6151465396592).

Almost surely, 2^{18454396189773} is an apocalyptic number.

It is an amenable number.

18454396189773 is a deficient number, since it is larger than the sum of its proper divisors (6151465396595).

18454396189773 is an equidigital number, since it uses as much as digits as its factorization.

18454396189773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151465396594.

The product of its digits is 1097349120, while the sum is 75.

The spelling of 18454396189773 in words is "eighteen trillion, four hundred fifty-four billion, three hundred ninety-six million, one hundred eighty-nine thousand, seven hundred seventy-three".