5981331921 has 8 divisors (see below), whose sum is σ = 8232370944. Its totient is φ = 3858923760.

The previous prime is 5981331919. The next prime is 5981331931. The reversal of 5981331921 is 1291331895.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5981331921 - 2¹ = 5981331919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5981331911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32157606 + ... + 32157791.

It is an arithmetic number, because the mean of its divisors is an integer number (1029046368).

Almost surely, 2^5981331921 is an apocalyptic number.

It is an amenable number.

5981331921 is a deficient number, since it is larger than the sum of its proper divisors (2251039023).

5981331921 is a wasteful number, since it uses less digits than its factorization.

5981331921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64315431.

The product of its digits is 58320, while the sum is 42.

The square root of 5981331921 is about 77339.0711154459. The cubic root of 5981331921 is about 1815.2340710040.

The spelling of 5981331921 in words is "five billion, nine hundred eighty-one million, three hundred thirty-one thousand, nine hundred twenty-one".