83278183 has 4 divisors (see below), whose sum is σ = 85964608. Its totient is φ = 80591760.

The previous prime is 83278171. The next prime is 83278199. The reversal of 83278183 is 38187238.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83278183 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83278103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343166 + ... + 1343227.

It is an arithmetic number, because the mean of its divisors is an integer number (21491152).

Almost surely, 2^83278183 is an apocalyptic number.

83278183 is a deficient number, since it is larger than the sum of its proper divisors (2686425).

83278183 is a wasteful number, since it uses less digits than its factorization.

83278183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686424.

The product of its digits is 64512, while the sum is 40.

The square root of 83278183 is about 9125.6880836461. The cubic root of 83278183 is about 436.6938545963.

The spelling of 83278183 in words is "eighty-three million, two hundred seventy-eight thousand, one hundred eighty-three".