229557987983 has 4 divisors (see below), whose sum is σ = 231664024680. Its totient is φ = 227451951288.

The previous prime is 229557987979. The next prime is 229557988013. The reversal of 229557987983 is 389789755922.

It is a happy number.

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 229557987983 - 2² = 229557987979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229557987983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229557987283) 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, 1053018185 + ... + 1053018402.

It is an arithmetic number, because the mean of its divisors is an integer number (57916006170).

Almost surely, 2^229557987983 is an apocalyptic number.

229557987983 is a deficient number, since it is larger than the sum of its proper divisors (2106036697).

229557987983 is a wasteful number, since it uses less digits than its factorization.

229557987983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106036696.

The product of its digits is 685843200, while the sum is 74.

The spelling of 229557987983 in words is "two hundred twenty-nine billion, five hundred fifty-seven million, nine hundred eighty-seven thousand, nine hundred eighty-three".