189991370294 has 24 divisors (see below), whose sum is σ = 313746921264. Its totient is φ = 86222782800.

The previous prime is 189991370287. The next prime is 189991370329. The reversal of 189991370294 is 492073199981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469397 + ... + 774800.

It is an arithmetic number, because the mean of its divisors is an integer number (13072788386).

Almost surely, 2^189991370294 is an apocalyptic number.

189991370294 is a deficient number, since it is larger than the sum of its proper divisors (123755550970).

189991370294 is a wasteful number, since it uses less digits than its factorization.

189991370294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244852 (or 1244841 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 62.

The spelling of 189991370294 in words is "one hundred eighty-nine billion, nine hundred ninety-one million, three hundred seventy thousand, two hundred ninety-four".