1890073 has 4 divisors (see below), whose sum is σ = 1895440. Its totient is φ = 1884708.

The previous prime is 1890041. The next prime is 1890079. The reversal of 1890073 is 3700981.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3700981 = 541 ⋅6841.

It is a cyclic number.

It is not a de Polignac number, because 1890073 - 2⁵ = 1890041 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1890079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115 + ... + 2872.

It is an arithmetic number, because the mean of its divisors is an integer number (473860).

2^1890073 is an apocalyptic number.

It is an amenable number.

1890073 is a deficient number, since it is larger than the sum of its proper divisors (5367).

1890073 is an equidigital number, since it uses as much as digits as its factorization.

1890073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1890073 is about 1374.7992580737. The cubic root of 1890073 is about 123.6401507930.

The spelling of 1890073 in words is "one million, eight hundred ninety thousand, seventy-three".