228813923519 has 4 divisors (see below), whose sum is σ = 228815240544. Its totient is φ = 228812606496.

The previous prime is 228813923479. The next prime is 228813923549. The reversal of 228813923519 is 915329318822.

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-228813923519 is a prime.

It is a super-2 number, since 2×228813923519² (a number of 24 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 (228813923549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349607 + ... + 761480.

It is an arithmetic number, because the mean of its divisors is an integer number (57203810136).

Almost surely, 2^228813923519 is an apocalyptic number.

228813923519 is a deficient number, since it is larger than the sum of its proper divisors (1317025).

228813923519 is a wasteful number, since it uses less digits than its factorization.

228813923519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317024.

The product of its digits is 1866240, while the sum is 53.

The spelling of 228813923519 in words is "two hundred twenty-eight billion, eight hundred thirteen million, nine hundred twenty-three thousand, five hundred nineteen".