18955319467983 has 8 divisors (see below), whose sum is σ = 25275144151296. Its totient is φ = 12636187215000.

The previous prime is 18955319467967. The next prime is 18955319468003. The reversal of 18955319467983 is 38976491355981.

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

It is not a de Polignac number, because 18955319467983 - 2⁴ = 18955319467967 is a prime.

It is a super-2 number, since 2×18955319467983² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18955319467899 and 18955319467908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18955319467283) 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, 173043703 + ... + 173153208.

It is an arithmetic number, because the mean of its divisors is an integer number (3159393018912).

Almost surely, 2^{18955319467983} is an apocalyptic number.

18955319467983 is a deficient number, since it is larger than the sum of its proper divisors (6319824683313).

18955319467983 is a wasteful number, since it uses less digits than its factorization.

18955319467983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346215165.

The product of its digits is 1763596800, while the sum is 78.

The spelling of 18955319467983 in words is "eighteen trillion, nine hundred fifty-five billion, three hundred nineteen million, four hundred sixty-seven thousand, nine hundred eighty-three".