78108383 has 4 divisors (see below), whose sum is σ = 78202320. Its totient is φ = 78014448.

The previous prime is 78108367. The next prime is 78108413. The reversal of 78108383 is 38380187.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78108383 - 2⁴ = 78108367 is a prime.

It is a super-2 number, since 2×78108383² = 12201838989749378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78108323) 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, 45710 + ... + 47387.

It is an arithmetic number, because the mean of its divisors is an integer number (19550580).

Almost surely, 2^78108383 is an apocalyptic number.

78108383 is a deficient number, since it is larger than the sum of its proper divisors (93937).

78108383 is an equidigital number, since it uses as much as digits as its factorization.

78108383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93936.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 78108383 is about 8837.8947153720. The cubic root of 78108383 is about 427.4636755384.

The spelling of 78108383 in words is "seventy-eight million, one hundred eight thousand, three hundred eighty-three".