199290942658 has 16 divisors (see below), whose sum is σ = 314940546720. Its totient is φ = 94319781696.

The previous prime is 199290942553. The next prime is 199290942689. The reversal of 199290942658 is 856249092991.

199290942658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 199290942658.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210535 + ... + 2298922.

It is an arithmetic number, because the mean of its divisors is an integer number (19683784170).

Almost surely, 2^199290942658 is an apocalyptic number.

199290942658 is a deficient number, since it is larger than the sum of its proper divisors (115649604062).

199290942658 is a wasteful number, since it uses less digits than its factorization.

199290942658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510641.

The product of its (nonzero) digits is 25194240, while the sum is 64.

The spelling of 199290942658 in words is "one hundred ninety-nine billion, two hundred ninety million, nine hundred forty-two thousand, six hundred fifty-eight".