191868659074 has 8 divisors (see below), whose sum is σ = 288657004428. Its totient is φ = 95649657600.

The previous prime is 191868659051. The next prime is 191868659083. The reversal of 191868659074 is 470956868191.

It can be written as a sum of positive squares in 2 ways, for example, as 184347433449 + 7521225625 = 429357^2 + 86725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 191868658997 and 191868659015.

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, 142335127 + ... + 142336474.

Almost surely, 2^191868659074 is an apocalyptic number.

191868659074 is a deficient number, since it is larger than the sum of its proper divisors (96788345354).

191868659074 is a wasteful number, since it uses less digits than its factorization.

191868659074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284671940.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 191868659074 in words is "one hundred ninety-one billion, eight hundred sixty-eight million, six hundred fifty-nine thousand, seventy-four".