1890741 has 4 divisors (see below), whose sum is σ = 2520992. Its totient is φ = 1260492.

The previous prime is 1890731. The next prime is 1890743. The reversal of 1890741 is 1470981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1890741 - 2⁶ = 1890677 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1890699 and 1890708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890743) 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 3 ways as a sum of consecutive naturals, for example, 315121 + ... + 315126.

It is an arithmetic number, because the mean of its divisors is an integer number (630248).

2^1890741 is an apocalyptic number.

It is an amenable number.

1890741 is a deficient number, since it is larger than the sum of its proper divisors (630251).

1890741 is an equidigital number, since it uses as much as digits as its factorization.

1890741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630250.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1890741 is about 1375.0421811712. The cubic root of 1890741 is about 123.6547149381.

The spelling of 1890741 in words is "one million, eight hundred ninety thousand, seven hundred forty-one".