190991195 has 8 divisors (see below), whose sum is σ = 239154336. Its totient is φ = 146149696.

The previous prime is 190991179. The next prime is 190991219. The reversal of 190991195 is 591199091.

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

It is a cyclic number.

It is not a de Polignac number, because 190991195 - 2⁴ = 190991179 is a prime.

It is a Duffinian 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, 830282 + ... + 830511.

It is an arithmetic number, because the mean of its divisors is an integer number (29894292).

Almost surely, 2^190991195 is an apocalyptic number.

190991195 is a deficient number, since it is larger than the sum of its proper divisors (48163141).

190991195 is a wasteful number, since it uses less digits than its factorization.

190991195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660821.

The product of its (nonzero) digits is 32805, while the sum is 44.

The square root of 190991195 is about 13819.9564036939. The cubic root of 190991195 is about 575.8876724039.

The spelling of 190991195 in words is "one hundred ninety million, nine hundred ninety-one thousand, one hundred ninety-five".