1890973 has 8 divisors (see below), whose sum is σ = 2176640. Its totient is φ = 1609200.

The previous prime is 1890953. The next prime is 1890997. The reversal of 1890973 is 3790981.

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

It is a cyclic number.

It is not a de Polignac number, because 1890973 - 2¹³ = 1882781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890913) 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, 163 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (272080).

2^1890973 is an apocalyptic number.

It is an amenable number.

1890973 is a deficient number, since it is larger than the sum of its proper divisors (285667).

1890973 is a wasteful number, since it uses less digits than its factorization.

1890973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1890973 is about 1375.1265396319. The cubic root of 1890973 is about 123.6597723416.

The spelling of 1890973 in words is "one million, eight hundred ninety thousand, nine hundred seventy-three".