189791668350 has 192 divisors, whose sum is σ = 540142214400. Its totient is φ = 48965834880.

The previous prime is 189791668349. The next prime is 189791668351. The reversal of 189791668350 is 53866197981.

It is an interprime number because it is at equal distance from previous prime (189791668349) and next prime (189791668351).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189791668351) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8930437 + ... + 8951663.

It is an arithmetic number, because the mean of its divisors is an integer number (2813240700).

Almost surely, 2^189791668350 is an apocalyptic number.

189791668350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189791668350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270071107200).

189791668350 is an abundant number, since it is smaller than the sum of its proper divisors (350350546050).

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

189791668350 is a wasteful number, since it uses less digits than its factorization.

189791668350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21464 (or 21453 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 189791668350 in words is "one hundred eighty-nine billion, seven hundred ninety-one million, six hundred sixty-eight thousand, three hundred fifty".