83971017938 has 8 divisors (see below), whose sum is σ = 126008517888. Its totient is φ = 41968178644.

The previous prime is 83971017833. The next prime is 83971017943.

83971017938 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×83971017938² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8659106 + ... + 8668797.

It is an arithmetic number, because the mean of its divisors is an integer number (15751064736).

Almost surely, 2^83971017938 is an apocalyptic number.

83971017938 is a deficient number, since it is larger than the sum of its proper divisors (42037499950).

83971017938 is a wasteful number, since it uses less digits than its factorization.

83971017938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17330328.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 83971017938 in words is "eighty-three billion, nine hundred seventy-one million, seventeen thousand, nine hundred thirty-eight".