18869734629 has 24 divisors (see below), whose sum is σ = 27347268312. Its totient is φ = 12537907200.

The previous prime is 18869734619. The next prime is 18869734657. The reversal of 18869734629 is 92643796881.

18869734629 is a `hidden beast` number, since 1 + 8 + 86 + 97 + 3 + 462 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13374922500 + 5494812129 = 115650^2 + 74127^2 .

It is not a de Polignac number, because 18869734629 - 2¹⁵ = 18869701861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18869734619) 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 23 ways as a sum of consecutive naturals, for example, 3659317 + ... + 3664469.

It is an arithmetic number, because the mean of its divisors is an integer number (1139469513).

Almost surely, 2^18869734629 is an apocalyptic number.

It is an amenable number.

18869734629 is a deficient number, since it is larger than the sum of its proper divisors (8477533683).

18869734629 is a wasteful number, since it uses less digits than its factorization.

18869734629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6437 (or 6434 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 18869734629 in words is "eighteen billion, eight hundred sixty-nine million, seven hundred thirty-four thousand, six hundred twenty-nine".