8137573982 has 4 divisors (see below), whose sum is σ = 12206360976. Its totient is φ = 4068786990.

The previous prime is 8137573967. The next prime is 8137573987. The reversal of 8137573982 is 2893757318.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8137573982² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8137573987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2034393494 + ... + 2034393497.

It is an arithmetic number, because the mean of its divisors is an integer number (3051590244).

Almost surely, 2^8137573982 is an apocalyptic number.

8137573982 is a deficient number, since it is larger than the sum of its proper divisors (4068786994).

8137573982 is a wasteful number, since it uses less digits than its factorization.

8137573982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068786993.

The product of its digits is 2540160, while the sum is 53.

The square root of 8137573982 is about 90208.5028253989. The cubic root of 8137573982 is about 2011.3994018759.

The spelling of 8137573982 in words is "eight billion, one hundred thirty-seven million, five hundred seventy-three thousand, nine hundred eighty-two".