1940553 has 6 divisors (see below), whose sum is σ = 2803034. Its totient is φ = 1293696.

The previous prime is 1940551. The next prime is 1940557. The reversal of 1940553 is 3550491.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 831744 = 1053^2 + 912^2 .

It is not a de Polignac number, because 1940553 - 2¹ = 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107800 + ... + 107817.

2^1940553 is an apocalyptic number.

It is an amenable number.

1940553 is a deficient number, since it is larger than the sum of its proper divisors (862481).

1940553 is a wasteful number, since it uses less digits than its factorization.

1940553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215623 (or 215620 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1940553 is about 1393.0373290045. The cubic root of 1940553 is about 124.7312198052.

The spelling of 1940553 in words is "one million, nine hundred forty thousand, five hundred fifty-three".