18889569452 has 12 divisors (see below), whose sum is σ = 35599573296. Its totient is φ = 8718262800.

The previous prime is 18889569443. The next prime is 18889569469. The reversal of 18889569452 is 25496598881.

It is a super-3 number, since 3×18889569452³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181630424 + ... + 181630527.

It is an arithmetic number, because the mean of its divisors is an integer number (2966631108).

Almost surely, 2^18889569452 is an apocalyptic number.

It is an amenable number.

18889569452 is a deficient number, since it is larger than the sum of its proper divisors (16710003844).

18889569452 is a wasteful number, since it uses less digits than its factorization.

18889569452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363260968 (or 363260966 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 65.

The spelling of 18889569452 in words is "eighteen billion, eight hundred eighty-nine million, five hundred sixty-nine thousand, four hundred fifty-two".