189361439832 has 16 divisors (see below), whose sum is σ = 473403599640. Its totient is φ = 63120479936.

The previous prime is 189361439821. The next prime is 189361439899. The reversal of 189361439832 is 238934163981.

It is a congruent number.

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, 3945029973 + ... + 3945030020.

Almost surely, 2^189361439832 is an apocalyptic number.

189361439832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189361439832 is an abundant number, since it is smaller than the sum of its proper divisors (284042159808).

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

189361439832 is a wasteful number, since it uses less digits than its factorization.

189361439832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7890060002 (or 7890059998 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The spelling of 189361439832 in words is "one hundred eighty-nine billion, three hundred sixty-one million, four hundred thirty-nine thousand, eight hundred thirty-two".