1818206272 has 56 divisors (see below), whose sum is σ = 3745748160. Its totient is φ = 874621440.

The previous prime is 1818206263. The next prime is 1818206329. The reversal of 1818206272 is 2726028181.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568197 + ... + 571387.

It is an arithmetic number, because the mean of its divisors is an integer number (66888360).

Almost surely, 2^1818206272 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 1818206272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1872874080).

1818206272 is an abundant number, since it is smaller than the sum of its proper divisors (1927541888).

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

1818206272 is a wasteful number, since it uses less digits than its factorization.

1818206272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1818206272 is about 42640.4300165934. The cubic root of 1818206272 is about 1220.5279162920.

The spelling of 1818206272 in words is "one billion, eight hundred eighteen million, two hundred six thousand, two hundred seventy-two".