1821368152 has 32 divisors (see below), whose sum is σ = 3449779200. Its totient is φ = 901466784.

The previous prime is 1821368149. The next prime is 1821368167. The reversal of 1821368152 is 2518631281.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 405873 + ... + 410335.

It is an arithmetic number, because the mean of its divisors is an integer number (107805600).

Almost surely, 2^1821368152 is an apocalyptic number.

It is an amenable number.

1821368152 is a deficient number, since it is larger than the sum of its proper divisors (1628411048).

1821368152 is a wasteful number, since it uses less digits than its factorization.

1821368152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975 (or 4971 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 1821368152 is about 42677.4899917978. The cubic root of 1821368152 is about 1221.2350102348.

The spelling of 1821368152 in words is "one billion, eight hundred twenty-one million, three hundred sixty-eight thousand, one hundred fifty-two".