1840564 has 24 divisors (see below), whose sum is σ = 3578400. Its totient is φ = 821280.

The previous prime is 1840561. The next prime is 1840577. The reversal of 1840564 is 4650481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242 + ... + 2950.

It is an arithmetic number, because the mean of its divisors is an integer number (149100).

2^1840564 is an apocalyptic number.

It is an amenable number.

1840564 is a deficient number, since it is larger than the sum of its proper divisors (1737836).

1840564 is a wasteful number, since it uses less digits than its factorization.

1840564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1840564 is about 1356.6738738547. The cubic root of 1840564 is about 122.5510324650.

The spelling of 1840564 in words is "one million, eight hundred forty thousand, five hundred sixty-four".