189788668888 has 64 divisors (see below), whose sum is σ = 457016232960. Its totient is φ = 71816823936.

The previous prime is 189788668879. The next prime is 189788668889. The reversal of 189788668888 is 888866887981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189788668889) 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, 5650620 + ... + 5684107.

It is an arithmetic number, because the mean of its divisors is an integer number (7140878640).

Almost surely, 2^189788668888 is an apocalyptic number.

It is an amenable number.

189788668888 is an abundant number, since it is smaller than the sum of its proper divisors (267227564072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189788668888 is a wasteful number, since it uses less digits than its factorization.

189788668888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11334776 (or 11334772 counting only the distinct ones).

The product of its digits is 4756340736, while the sum is 85.

The spelling of 189788668888 in words is "one hundred eighty-nine billion, seven hundred eighty-eight million, six hundred sixty-eight thousand, eight hundred eighty-eight".