1890195 has 8 divisors (see below), whose sum is σ = 3024336. Its totient is φ = 1008096.

The previous prime is 1890193. The next prime is 1890211. The reversal of 1890195 is 5910981.

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

It is not a de Polignac number, because 1890195 - 2¹ = 1890193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1890193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62992 + ... + 63021.

It is an arithmetic number, because the mean of its divisors is an integer number (378042).

2^1890195 is an apocalyptic number.

1890195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1890195 is a deficient number, since it is larger than the sum of its proper divisors (1134141).

1890195 is a wasteful number, since it uses less digits than its factorization.

1890195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126021.

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

The square root of 1890195 is about 1374.8436274719. The cubic root of 1890195 is about 123.6428109678.

The spelling of 1890195 in words is "one million, eight hundred ninety thousand, one hundred ninety-five".