229019827509 has 24 divisors (see below), whose sum is σ = 361346704992. Its totient is φ = 138620289120.

The previous prime is 229019827471. The next prime is 229019827511. The reversal of 229019827509 is 905728910922.

229019827509 is a `hidden beast` number, since 2 + 29 + 0 + 1 + 98 + 27 + 509 = 666.

It is not a de Polignac number, because 229019827509 - 2¹⁹ = 229019303221 is a prime.

It is a super-2 number, since 2×229019827509² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229019827549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1419807 + ... + 1572860.

It is an arithmetic number, because the mean of its divisors is an integer number (15056112708).

Almost surely, 2^229019827509 is an apocalyptic number.

It is an amenable number.

229019827509 is a deficient number, since it is larger than the sum of its proper divisors (132326877483).

229019827509 is a wasteful number, since it uses less digits than its factorization.

229019827509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993457 (or 2993454 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 229019827509 in words is "two hundred twenty-nine billion, nineteen million, eight hundred twenty-seven thousand, five hundred nine".