18964271363 has 4 divisors (see below), whose sum is σ = 19152036528. Its totient is φ = 18776506200.

The previous prime is 18964271357. The next prime is 18964271371. The reversal of 18964271363 is 36317246981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36317246981 = 59 ⋅615546559.

It is a cyclic number.

It is not a de Polignac number, because 18964271363 - 2⁶ = 18964271299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18964271303) 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, 93882431 + ... + 93882632.

It is an arithmetic number, because the mean of its divisors is an integer number (4788009132).

Almost surely, 2^18964271363 is an apocalyptic number.

18964271363 is a deficient number, since it is larger than the sum of its proper divisors (187765165).

18964271363 is a wasteful number, since it uses less digits than its factorization.

18964271363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187765164.

The product of its digits is 1306368, while the sum is 50.

The spelling of 18964271363 in words is "eighteen billion, nine hundred sixty-four million, two hundred seventy-one thousand, three hundred sixty-three".