18964454311 has 8 divisors (see below), whose sum is σ = 21039148800. Its totient is φ = 16948202040.

The previous prime is 18964454291. The next prime is 18964454317. The reversal of 18964454311 is 11345446981.

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

It is not a de Polignac number, because 18964454311 - 2¹⁵ = 18964421543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964454317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14609871 + ... + 14611168.

It is an arithmetic number, because the mean of its divisors is an integer number (2629893600).

Almost surely, 2^18964454311 is an apocalyptic number.

18964454311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18964454311 is a deficient number, since it is larger than the sum of its proper divisors (2074694489).

18964454311 is a wasteful number, since it uses less digits than its factorization.

18964454311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29221109.

The product of its digits is 414720, while the sum is 46.

The spelling of 18964454311 in words is "eighteen billion, nine hundred sixty-four million, four hundred fifty-four thousand, three hundred eleven".