83668730938 has 8 divisors (see below), whose sum is σ = 135157180788. Its totient is φ = 38616337344.

The previous prime is 83668730909. The next prime is 83668730939. The reversal of 83668730938 is 83903786638.

It can be written as a sum of positive squares in 2 ways, for example, as 80104282729 + 3564448209 = 283027^2 + 59703^2 .

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 (83668730939) 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, 1609014031 + ... + 1609014082.

Almost surely, 2^83668730938 is an apocalyptic number.

83668730938 is a deficient number, since it is larger than the sum of its proper divisors (51488449850).

83668730938 is a wasteful number, since it uses less digits than its factorization.

83668730938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218028128.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 83668730938 in words is "eighty-three billion, six hundred sixty-eight million, seven hundred thirty thousand, nine hundred thirty-eight".