18947654130189 has 16 divisors (see below), whose sum is σ = 25781491368000. Its totient is φ = 12375115814016.

The previous prime is 18947654130179. The next prime is 18947654130269. The reversal of 18947654130189 is 98103145674981.

It is not a de Polignac number, because 18947654130189 - 2⁵ = 18947654130157 is a prime.

It is a super-2 number, since 2×18947654130189² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18947654130169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290299479 + ... + 290364740.

It is an arithmetic number, because the mean of its divisors is an integer number (1611343210500).

Almost surely, 2^{18947654130189} is an apocalyptic number.

It is an amenable number.

18947654130189 is a deficient number, since it is larger than the sum of its proper divisors (6833837237811).

18947654130189 is a wasteful number, since it uses less digits than its factorization.

18947654130189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580664444.

The product of its (nonzero) digits is 52254720, while the sum is 66.

The spelling of 18947654130189 in words is "eighteen trillion, nine hundred forty-seven billion, six hundred fifty-four million, one hundred thirty thousand, one hundred eighty-nine".