190161790 has 64 divisors (see below), whose sum is σ = 425658240. Its totient is φ = 59558400.

The previous prime is 190161757. The next prime is 190161821. The reversal of 190161790 is 97161091.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90876 + ... + 92944.

It is an arithmetic number, because the mean of its divisors is an integer number (6650910).

Almost surely, 2^190161790 is an apocalyptic number.

190161790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190161790 is an abundant number, since it is smaller than the sum of its proper divisors (235496450).

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

190161790 is a wasteful number, since it uses less digits than its factorization.

190161790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 190161790 is about 13789.9162434005. The cubic root of 190161790 is about 575.0528395046.

The spelling of 190161790 in words is "one hundred ninety million, one hundred sixty-one thousand, seven hundred ninety".