389891151866 has 8 divisors (see below), whose sum is σ = 584842011264. Its totient is φ = 194943814780.

The previous prime is 389891151857. The next prime is 389891151869. The reversal of 389891151866 is 668151198983.

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

It is a super-2 number, since 2×389891151866² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389891151869) 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, 583850 + ... + 1058613.

It is an arithmetic number, because the mean of its divisors is an integer number (73105251408).

Almost surely, 2^389891151866 is an apocalyptic number.

389891151866 is a deficient number, since it is larger than the sum of its proper divisors (194950859398).

389891151866 is a wasteful number, since it uses less digits than its factorization.

389891151866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761156.

The product of its digits is 22394880, while the sum is 65.

The spelling of 389891151866 in words is "three hundred eighty-nine billion, eight hundred ninety-one million, one hundred fifty-one thousand, eight hundred sixty-six".