8321491983 has 24 divisors (see below), whose sum is σ = 13125576960. Its totient is φ = 4674537840.

The previous prime is 8321491963. The next prime is 8321492033. The reversal of 8321491983 is 3891941238.

It is not a de Polignac number, because 8321491983 - 2¹⁰ = 8321490959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8321491903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 471063 + ... + 488408.

It is an arithmetic number, because the mean of its divisors is an integer number (546899040).

Almost surely, 2^8321491983 is an apocalyptic number.

8321491983 is a deficient number, since it is larger than the sum of its proper divisors (4804084977).

8321491983 is a wasteful number, since it uses less digits than its factorization.

8321491983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959547 (or 959540 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 8321491983 is about 91222.2121141556. The cubic root of 8321491983 is about 2026.4399235265.

The spelling of 8321491983 in words is "eight billion, three hundred twenty-one million, four hundred ninety-one thousand, nine hundred eighty-three".