1818508412 has 36 divisors (see below), whose sum is σ = 3738050064. Its totient is φ = 758280960.

The previous prime is 1818508331. The next prime is 1818508429. The reversal of 1818508412 is 2148058181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14612 + ... + 62052.

It is an arithmetic number, because the mean of its divisors is an integer number (103834724).

Almost surely, 2^1818508412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818508412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1869025032).

1818508412 is an abundant number, since it is smaller than the sum of its proper divisors (1919541652).

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

1818508412 is a wasteful number, since it uses less digits than its factorization.

1818508412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47526 (or 47487 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 38.

The square root of 1818508412 is about 42643.9727511403. The cubic root of 1818508412 is about 1220.5955195274.

The spelling of 1818508412 in words is "one billion, eight hundred eighteen million, five hundred eight thousand, four hundred twelve".