191000998 has 16 divisors (see below), whose sum is σ = 288794880. Its totient is φ = 94739400.

The previous prime is 191000981. The next prime is 191001007. The reversal of 191000998 is 899000191.

191000998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184743 + ... + 185773.

It is an arithmetic number, because the mean of its divisors is an integer number (18049680).

Almost surely, 2^191000998 is an apocalyptic number.

191000998 is a deficient number, since it is larger than the sum of its proper divisors (97793882).

191000998 is a wasteful number, since it uses less digits than its factorization.

191000998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 191000998 is about 13820.3110674109. The cubic root of 191000998 is about 575.8975250924.

The spelling of 191000998 in words is "one hundred ninety-one million, nine hundred ninety-eight", and thus it is an aban number.