83138365 has 8 divisors (see below), whose sum is σ = 102199608. Its totient is φ = 64888320.

The previous prime is 83138351. The next prime is 83138387. The reversal of 83138365 is 56383138.

It can be written as a sum of positive squares in 4 ways, for example, as 4088484 + 79049881 = 2022^2 + 8891^2 .

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

It is not a de Polignac number, because 83138365 - 2¹⁷ = 83007293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202572 + ... + 202981.

It is an arithmetic number, because the mean of its divisors is an integer number (12774951).

Almost surely, 2^83138365 is an apocalyptic number.

It is an amenable number.

83138365 is a deficient number, since it is larger than the sum of its proper divisors (19061243).

83138365 is a wasteful number, since it uses less digits than its factorization.

83138365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405599.

The product of its digits is 51840, while the sum is 37.

The square root of 83138365 is about 9118.0241829028. The cubic root of 83138365 is about 436.4493253110.

The spelling of 83138365 in words is "eighty-three million, one hundred thirty-eight thousand, three hundred sixty-five".