1890992 has 20 divisors (see below), whose sum is σ = 3716280. Its totient is φ = 931968.

The previous prime is 1890953. The next prime is 1890997. The reversal of 1890992 is 2990981.

It is not an unprimeable number, because it can be changed into a prime (1890997) 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 3 ways as a sum of consecutive naturals, for example, 359 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (185814).

2^1890992 is an apocalyptic number.

It is an amenable number.

1890992 is a deficient number, since it is larger than the sum of its proper divisors (1825288).

1890992 is a wasteful number, since it uses less digits than its factorization.

1890992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1890992 is about 1375.1334480697. The cubic root of 1890992 is about 123.6601865072.

It can be divided in two parts, 1890 and 992, that added together give a palindrome (2882).

The spelling of 1890992 in words is "one million, eight hundred ninety thousand, nine hundred ninety-two".