1940805 has 48 divisors (see below), whose sum is σ = 3706560. Its totient is φ = 935424.

The previous prime is 1940797. The next prime is 1940821. The reversal of 1940805 is 5080491.

It is not a de Polignac number, because 1940805 - 2³ = 1940797 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32866 + ... + 32924.

It is an arithmetic number, because the mean of its divisors is an integer number (77220).

2^1940805 is an apocalyptic number.

1940805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1940805 is a deficient number, since it is larger than the sum of its proper divisors (1765755).

1940805 is a wasteful number, since it uses less digits than its factorization.

1940805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1940805 is about 1393.1277759057. The cubic root of 1940805 is about 124.7366187657.

The spelling of 1940805 in words is "one million, nine hundred forty thousand, eight hundred five".