1945564 has 6 divisors (see below), whose sum is σ = 3404744. Its totient is φ = 972780.

The previous prime is 1945561. The next prime is 1945579. The reversal of 1945564 is 4655491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243192 + ... + 243199.

2^1945564 is an apocalyptic number.

It is an amenable number.

1945564 is a deficient number, since it is larger than the sum of its proper divisors (1459180).

1945564 is a wasteful number, since it uses less digits than its factorization.

1945564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486395 (or 486393 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 1945564 is about 1394.8347572383. The cubic root of 1945564 is about 124.8384900729.

The spelling of 1945564 in words is "one million, nine hundred forty-five thousand, five hundred sixty-four".