190188323919 has 20 divisors (see below), whose sum is σ = 309936529320. Its totient is φ = 115265650320.

The previous prime is 190188323881. The next prime is 190188323947. The reversal of 190188323919 is 919323881091.

It is not a de Polignac number, because 190188323919 - 2¹¹ = 190188321871 is a prime.

It is a super-2 number, since 2×190188323919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190188323959) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 106726564 + ... + 106728345.

It is an arithmetic number, because the mean of its divisors is an integer number (15496826466).

Almost surely, 2^190188323919 is an apocalyptic number.

190188323919 is a deficient number, since it is larger than the sum of its proper divisors (119748205401).

190188323919 is a wasteful number, since it uses less digits than its factorization.

190188323919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213454932 (or 213454923 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The spelling of 190188323919 in words is "one hundred ninety billion, one hundred eighty-eight million, three hundred twenty-three thousand, nine hundred nineteen".