1918422 has 24 divisors (see below), whose sum is σ = 4534920. Its totient is φ = 581280.

The previous prime is 1918417. The next prime is 1918429. The reversal of 1918422 is 2248191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4647 + ... + 5042.

It is an arithmetic number, because the mean of its divisors is an integer number (188955).

2^1918422 is an apocalyptic number.

1918422 is an abundant number, since it is smaller than the sum of its proper divisors (2616498).

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

1918422 is a wasteful number, since it uses less digits than its factorization.

1918422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9708 (or 9705 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1918422 is about 1385.0711173077. The cubic root of 1918422 is about 124.2552408160.

It can be divided in two parts, 191842 and 2, that added together give a square (191844 = 438²).

The spelling of 1918422 in words is "one million, nine hundred eighteen thousand, four hundred twenty-two".