1821524132 has 12 divisors (see below), whose sum is σ = 3188006640. Its totient is φ = 910665096.

The previous prime is 1821524101. The next prime is 1821524137. The reversal of 1821524132 is 2314251281.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1821524095 and 1821524104.

It is not an unprimeable number, because it can be changed into a prime (1821524137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33083 + ... + 68829.

It is an arithmetic number, because the mean of its divisors is an integer number (265667220).

Almost surely, 2^1821524132 is an apocalyptic number.

It is an amenable number.

1821524132 is a deficient number, since it is larger than the sum of its proper divisors (1366482508).

1821524132 is a wasteful number, since it uses less digits than its factorization.

1821524132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48490 (or 48488 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1821524132 is about 42679.3173797332. The cubic root of 1821524132 is about 1221.2698709884.

The spelling of 1821524132 in words is "one billion, eight hundred twenty-one million, five hundred twenty-four thousand, one hundred thirty-two".