8233878981 has 4 divisors (see below), whose sum is σ = 10978505312. Its totient is φ = 5489252652.

The previous prime is 8233878979. The next prime is 8233879013. The reversal of 8233878981 is 1898783328.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8233878981 - 2¹ = 8233878979 is a prime.

It is a super-2 number, since 2×8233878981² (a number of 21 digits) 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 (8233878181) 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, 1372313161 + ... + 1372313166.

It is an arithmetic number, because the mean of its divisors is an integer number (2744626328).

Almost surely, 2^8233878981 is an apocalyptic number.

It is an amenable number.

8233878981 is a deficient number, since it is larger than the sum of its proper divisors (2744626331).

8233878981 is a wasteful number, since it uses less digits than its factorization.

8233878981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744626330.

The product of its digits is 4644864, while the sum is 57.

The square root of 8233878981 is about 90740.7239391443. The cubic root of 8233878981 is about 2019.3030125676.

The spelling of 8233878981 in words is "eight billion, two hundred thirty-three million, eight hundred seventy-eight thousand, nine hundred eighty-one".