1918456 has 8 divisors (see below), whose sum is σ = 3597120. Its totient is φ = 959224.

The previous prime is 1918451. The next prime is 1918463. The reversal of 1918456 is 6548191.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119896 + ... + 119911.

It is an arithmetic number, because the mean of its divisors is an integer number (449640).

2^1918456 is an apocalyptic number.

It is an amenable number.

1918456 is a deficient number, since it is larger than the sum of its proper divisors (1678664).

1918456 is a wasteful number, since it uses less digits than its factorization.

1918456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239813 (or 239809 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 1918456 is about 1385.0833909913. The cubic root of 1918456 is about 124.2559748661.

The spelling of 1918456 in words is "one million, nine hundred eighteen thousand, four hundred fifty-six".