190717854338 has 16 divisors (see below), whose sum is σ = 330441630624. Its totient is φ = 81590525760.

The previous prime is 190717854337. The next prime is 190717854407. The reversal of 190717854338 is 833458717091.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (190717854337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254970020 + ... + 254970767.

It is an arithmetic number, because the mean of its divisors is an integer number (20652601914).

Almost surely, 2^190717854338 is an apocalyptic number.

190717854338 is a deficient number, since it is larger than the sum of its proper divisors (139723776286).

190717854338 is a wasteful number, since it uses less digits than its factorization.

190717854338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509940817.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 190717854338 in words is "one hundred ninety billion, seven hundred seventeen million, eight hundred fifty-four thousand, three hundred thirty-eight".