190805998 has 8 divisors (see below), whose sum is σ = 286268760. Its totient is φ = 95383080.

The previous prime is 190805971. The next prime is 190806029. The reversal of 190805998 is 899508091.

It is a happy number.

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

It is a congruent number.

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, 10068 + ... + 21976.

It is an arithmetic number, because the mean of its divisors is an integer number (35783595).

Almost surely, 2^190805998 is an apocalyptic number.

190805998 is a deficient number, since it is larger than the sum of its proper divisors (95462762).

190805998 is a wasteful number, since it uses less digits than its factorization.

190805998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19922.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 190805998 is about 13813.2544318853. The cubic root of 190805998 is about 575.7014733137.

The spelling of 190805998 in words is "one hundred ninety million, eight hundred five thousand, nine hundred ninety-eight".