1940555 has 4 divisors (see below), whose sum is σ = 2328672. Its totient is φ = 1552440.

The previous prime is 1940551. The next prime is 1940557. The reversal of 1940555 is 5550491.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1940555 - 2² = 1940551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940551) 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, 194051 + ... + 194060.

It is an arithmetic number, because the mean of its divisors is an integer number (582168).

2^1940555 is an apocalyptic number.

1940555 is a deficient number, since it is larger than the sum of its proper divisors (388117).

1940555 is an equidigital number, since it uses as much as digits as its factorization.

1940555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388116.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1940555 is about 1393.0380468602. The cubic root of 1940555 is about 124.7312626560.

The spelling of 1940555 in words is "one million, nine hundred forty thousand, five hundred fifty-five".