1905073 has 4 divisors (see below), whose sum is σ = 2005360. Its totient is φ = 1804788.

The previous prime is 1905053. The next prime is 1905077. The reversal of 1905073 is 3705091.

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: 3705091 = 13 ⋅285007.

It is a cyclic number.

It is not a de Polignac number, because 1905073 - 2⁵ = 1905041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1905077) 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, 50115 + ... + 50152.

It is an arithmetic number, because the mean of its divisors is an integer number (501340).

2^1905073 is an apocalyptic number.

It is an amenable number.

1905073 is a deficient number, since it is larger than the sum of its proper divisors (100287).

1905073 is a wasteful number, since it uses less digits than its factorization.

1905073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100286.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 1905073 is about 1380.2438190407. The cubic root of 1905073 is about 123.9663670491.

The spelling of 1905073 in words is "one million, nine hundred five thousand, seventy-three".