1944378 has 16 divisors (see below), whose sum is σ = 4320960. Its totient is φ = 648108.

The previous prime is 1944377. The next prime is 1944379. The reversal of 1944378 is 8734491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1944377) and next prime (1944379).

It is not an unprimeable number, because it can be changed into a prime (1944373) 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 7 ways as a sum of consecutive naturals, for example, 17950 + ... + 18057.

It is an arithmetic number, because the mean of its divisors is an integer number (270060).

2^1944378 is an apocalyptic number.

1944378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1944378 is an abundant number, since it is smaller than the sum of its proper divisors (2376582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1944378 is a wasteful number, since it uses less digits than its factorization.

1944378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36018 (or 36012 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1944378 is about 1394.4095524630. The cubic root of 1944378 is about 124.8131180737.

The spelling of 1944378 in words is "one million, nine hundred forty-four thousand, three hundred seventy-eight".