83378518 has 8 divisors (see below), whose sum is σ = 125439912. Its totient is φ = 41565216.

The previous prime is 83378513. The next prime is 83378527. The reversal of 83378518 is 81587338.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83378513) 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, 61180 + ... + 62527.

It is an arithmetic number, because the mean of its divisors is an integer number (15679989).

Almost surely, 2^83378518 is an apocalyptic number.

83378518 is a deficient number, since it is larger than the sum of its proper divisors (42061394).

83378518 is a wasteful number, since it uses less digits than its factorization.

83378518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124046.

The product of its digits is 161280, while the sum is 43.

The square root of 83378518 is about 9131.1838224844. The cubic root of 83378518 is about 436.8691629883.

The spelling of 83378518 in words is "eighty-three million, three hundred seventy-eight thousand, five hundred eighteen".