191902194 has 48 divisors (see below), whose sum is σ = 454559040. Its totient is φ = 58027680.

The previous prime is 191902189. The next prime is 191902201. The reversal of 191902194 is 491209191.

191902194 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139699 + ... + 141065.

It is an arithmetic number, because the mean of its divisors is an integer number (9469980).

Almost surely, 2^191902194 is an apocalyptic number.

191902194 is an abundant number, since it is smaller than the sum of its proper divisors (262656846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191902194 is a wasteful number, since it uses less digits than its factorization.

191902194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 191902194 is about 13852.8767409517. The cubic root of 191902194 is about 576.8018526920.

The spelling of 191902194 in words is "one hundred ninety-one million, nine hundred two thousand, one hundred ninety-four".