18853871672 has 8 divisors (see below), whose sum is σ = 35351009400. Its totient is φ = 9426935832.

The previous prime is 18853871671. The next prime is 18853871683. The reversal of 18853871672 is 27617835881.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18853871671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1178366972 + ... + 1178366987.

It is an arithmetic number, because the mean of its divisors is an integer number (4418876175).

Almost surely, 2^18853871672 is an apocalyptic number.

It is an amenable number.

18853871672 is a deficient number, since it is larger than the sum of its proper divisors (16497137728).

18853871672 is a wasteful number, since it uses less digits than its factorization.

18853871672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356733965 (or 2356733961 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 56.

The spelling of 18853871672 in words is "eighteen billion, eight hundred fifty-three million, eight hundred seventy-one thousand, six hundred seventy-two".