1922818 has 16 divisors (see below), whose sum is σ = 2993760. Its totient is φ = 925600.

The previous prime is 1922813. The next prime is 1922821. The reversal of 1922818 is 8182291.

It is a happy number.

It is a super-2 number, since 2×1922818² = 7394458122248, which contains 22 as substring.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1922818.

It is not an unprimeable number, because it can be changed into a prime (1922813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10653 + ... + 10831.

It is an arithmetic number, because the mean of its divisors is an integer number (187110).

2^1922818 is an apocalyptic number.

1922818 is a deficient number, since it is larger than the sum of its proper divisors (1070942).

1922818 is a wasteful number, since it uses less digits than its factorization.

1922818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353.

The product of its digits is 2304, while the sum is 31.

The square root of 1922818 is about 1386.6571313775. The cubic root of 1922818 is about 124.3500773274.

The spelling of 1922818 in words is "one million, nine hundred twenty-two thousand, eight hundred eighteen".