2432161821 has 16 divisors (see below), whose sum is σ = 3356098560. Its totient is φ = 1564879680.

The previous prime is 2432161819. The next prime is 2432161843. The reversal of 2432161821 is 1281612342.

It is not a de Polignac number, because 2432161821 - 2¹ = 2432161819 is a prime.

It is a super-2 number, since 2×2432161821² = 11830822247060072082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2432161021) 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 15 ways as a sum of consecutive naturals, for example, 292836 + ... + 301026.

It is an arithmetic number, because the mean of its divisors is an integer number (209756160).

Almost surely, 2^2432161821 is an apocalyptic number.

It is an amenable number.

2432161821 is a deficient number, since it is larger than the sum of its proper divisors (923936739).

2432161821 is a wasteful number, since it uses less digits than its factorization.

2432161821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11636.

The product of its digits is 4608, while the sum is 30.

The square root of 2432161821 is about 49316.9526734976. The cubic root of 2432161821 is about 1344.8199887150.

The spelling of 2432161821 in words is "two billion, four hundred thirty-two million, one hundred sixty-one thousand, eight hundred twenty-one".