190908105 has 16 divisors (see below), whose sum is σ = 321529920. Its totient is φ = 96458688.

The previous prime is 190908097. The next prime is 190908139. The reversal of 190908105 is 501809091.

It is not a de Polignac number, because 190908105 - 2³ = 190908097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334642 + ... + 335211.

It is an arithmetic number, because the mean of its divisors is an integer number (20095620).

Almost surely, 2^190908105 is an apocalyptic number.

190908105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190908105 is a deficient number, since it is larger than the sum of its proper divisors (130621815).

190908105 is a wasteful number, since it uses less digits than its factorization.

190908105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669880.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 190908105 is about 13816.9499166784. The cubic root of 190908105 is about 575.8041477027.

The spelling of 190908105 in words is "one hundred ninety million, nine hundred eight thousand, one hundred five".