83816378 has 8 divisors (see below), whose sum is σ = 125988480. Its totient is φ = 41820220.

The previous prime is 83816377. The next prime is 83816387. The reversal of 83816378 is 87361838.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83816377) 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, 42788 + ... + 44703.

It is an arithmetic number, because the mean of its divisors is an integer number (15748560).

Almost surely, 2^83816378 is an apocalyptic number.

83816378 is a deficient number, since it is larger than the sum of its proper divisors (42172102).

83816378 is a wasteful number, since it uses less digits than its factorization.

83816378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87972.

The product of its digits is 193536, while the sum is 44.

The square root of 83816378 is about 9155.1285081095. The cubic root of 83816378 is about 437.6325636927.

The spelling of 83816378 in words is "eighty-three million, eight hundred sixteen thousand, three hundred seventy-eight".