190155 has 16 divisors (see below), whose sum is σ = 347904. Its totient is φ = 86880.

The previous prime is 190147. The next prime is 190159. The reversal of 190155 is 551091.

It is a happy number.

It is not a de Polignac number, because 190155 - 2³ = 190147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (190159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801 + ... + 1010.

It is an arithmetic number, because the mean of its divisors is an integer number (21744).

2¹⁹⁰¹⁵⁵ is an apocalyptic number.

190155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

190155 is a deficient number, since it is larger than the sum of its proper divisors (157749).

190155 is a wasteful number, since it uses less digits than its factorization.

190155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 190155 is about 436.0676553013. The cubic root of 190155 is about 57.5045995060.

The spelling of 190155 in words is "one hundred ninety thousand, one hundred fifty-five".