1918964 has 12 divisors (see below), whose sum is σ = 3440388. Its totient is φ = 936000.

The previous prime is 1918933. The next prime is 1918967. The reversal of 1918964 is 4698191.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 708964 + 1210000 = 842^2 + 1100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5687 + ... + 6014.

It is an arithmetic number, because the mean of its divisors is an integer number (286699).

2^1918964 is an apocalyptic number.

It is an amenable number.

1918964 is a deficient number, since it is larger than the sum of its proper divisors (1521424).

1918964 is a wasteful number, since it uses less digits than its factorization.

1918964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11746 (or 11744 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 1918964 is about 1385.2667613135. The cubic root of 1918964 is about 124.2669414045.

It can be divided in two parts, 1918 and 964, that added together give a palindrome (2882).

The spelling of 1918964 in words is "one million, nine hundred eighteen thousand, nine hundred sixty-four".