1820165468 has 24 divisors (see below), whose sum is σ = 3475945200. Its totient is φ = 827089920.

The previous prime is 1820165461. The next prime is 1820165497. The reversal of 1820165468 is 8645610281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820165461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258458 + ... + 265406.

It is an arithmetic number, because the mean of its divisors is an integer number (144831050).

Almost surely, 2^1820165468 is an apocalyptic number.

It is an amenable number.

1820165468 is a deficient number, since it is larger than the sum of its proper divisors (1655779732).

1820165468 is a wasteful number, since it uses less digits than its factorization.

1820165468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12917 (or 12915 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 1820165468 is about 42663.3972861984. The cubic root of 1820165468 is about 1220.9661494872.

The spelling of 1820165468 in words is "one billion, eight hundred twenty million, one hundred sixty-five thousand, four hundred sixty-eight".