189688287372 has 48 divisors (see below), whose sum is σ = 457144934400. Its totient is φ = 61154772480.

The previous prime is 189688287337. The next prime is 189688287377. The reversal of 189688287372 is 273782886981.

It is a super-2 number, since 2×189688287372² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189688287297 and 189688287306.

It is not an unprimeable number, because it can be changed into a prime (189688287377) 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, 509404 + ... + 799292.

It is an arithmetic number, because the mean of its divisors is an integer number (9523852800).

Almost surely, 2^189688287372 is an apocalyptic number.

189688287372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189688287372 is an abundant number, since it is smaller than the sum of its proper divisors (267456647028).

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

189688287372 is a wasteful number, since it uses less digits than its factorization.

189688287372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291686 (or 291684 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 69.

The spelling of 189688287372 in words is "one hundred eighty-nine billion, six hundred eighty-eight million, two hundred eighty-seven thousand, three hundred seventy-two".