83689498638 has 24 divisors (see below), whose sum is σ = 181332822528. Its totient is φ = 27895641792.

The previous prime is 83689498637. The next prime is 83689498663.

83689498638 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83689498637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854131 + ... + 947057.

It is an arithmetic number, because the mean of its divisors is an integer number (7555534272).

Almost surely, 2^83689498638 is an apocalyptic number.

83689498638 is an abundant number, since it is smaller than the sum of its proper divisors (97643323890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83689498638 is a wasteful number, since it uses less digits than its factorization.

83689498638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142968 (or 142965 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 72.

The spelling of 83689498638 in words is "eighty-three billion, six hundred eighty-nine million, four hundred ninety-eight thousand, six hundred thirty-eight".