1945438 has 12 divisors (see below), whose sum is σ = 3207960. Its totient is φ = 884180.

The previous prime is 1945403. The next prime is 1945439. The reversal of 1945438 is 8345491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3778 + ... + 4261.

It is an arithmetic number, because the mean of its divisors is an integer number (267330).

2^1945438 is an apocalyptic number.

1945438 is a deficient number, since it is larger than the sum of its proper divisors (1262522).

1945438 is a wasteful number, since it uses less digits than its factorization.

1945438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8063 (or 8052 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1945438 is about 1394.7895898665. The cubic root of 1945438 is about 124.8357950550.

The spelling of 1945438 in words is "one million, nine hundred forty-five thousand, four hundred thirty-eight".