29859494638 has 16 divisors (see below), whose sum is σ = 44995650480. Its totient is φ = 14861001600.

The previous prime is 29859494573. The next prime is 29859494681. The reversal of 29859494638 is 83649495892.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1138533 + ... + 1164463.

It is an arithmetic number, because the mean of its divisors is an integer number (2812228155).

Almost surely, 2^29859494638 is an apocalyptic number.

29859494638 is a deficient number, since it is larger than the sum of its proper divisors (15136155842).

29859494638 is a wasteful number, since it uses less digits than its factorization.

29859494638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28563.

The product of its digits is 134369280, while the sum is 67.

The spelling of 29859494638 in words is "twenty-nine billion, eight hundred fifty-nine million, four hundred ninety-four thousand, six hundred thirty-eight".