1818212110 has 64 divisors (see below), whose sum is σ = 3891525120. Its totient is φ = 602916480.

The previous prime is 1818212089. The next prime is 1818212111. The reversal of 1818212110 is 112128181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818212111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111031 + ... + 126349.

It is an arithmetic number, because the mean of its divisors is an integer number (60805080).

Almost surely, 2^1818212110 is an apocalyptic number.

1818212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1818212110 is an abundant number, since it is smaller than the sum of its proper divisors (2073313010).

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

1818212110 is a wasteful number, since it uses less digits than its factorization.

1818212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15433.

The product of its (nonzero) digits is 256, while the sum is 25.

The square root of 1818212110 is about 42640.4984726961. The cubic root of 1818212110 is about 1220.5292226040.

The spelling of 1818212110 in words is "one billion, eight hundred eighteen million, two hundred twelve thousand, one hundred ten".