83915451938 has 8 divisors (see below), whose sum is σ = 126270255132. Its totient is φ = 41825366896.

The previous prime is 83915451937. The next prime is 83915452007.

It is a happy number.

83915451938 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 67240120249 + 16675331689 = 259307^2 + 129133^2 .

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

It is not an unprimeable number, because it can be changed into a prime (83915451937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66178745 + ... + 66180012.

Almost surely, 2^83915451938 is an apocalyptic number.

83915451938 is a deficient number, since it is larger than the sum of its proper divisors (42354803194).

83915451938 is a wasteful number, since it uses less digits than its factorization.

83915451938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132359076.

The product of its digits is 4665600, while the sum is 56.

The spelling of 83915451938 in words is "eighty-three billion, nine hundred fifteen million, four hundred fifty-one thousand, nine hundred thirty-eight".