29289738918 has 48 divisors (see below), whose sum is σ = 64508896368. Its totient is φ = 8859153600.

The previous prime is 29289738911. The next prime is 29289738941. The reversal of 29289738918 is 81983798292.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29289738911) 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, 355480 + ... + 430052.

It is an arithmetic number, because the mean of its divisors is an integer number (1343935341).

Almost surely, 2^29289738918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29289738918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32254448184).

29289738918 is an abundant number, since it is smaller than the sum of its proper divisors (35219157450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29289738918 is a wasteful number, since it uses less digits than its factorization.

29289738918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75141 (or 75130 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 66.

The spelling of 29289738918 in words is "twenty-nine billion, two hundred eighty-nine million, seven hundred thirty-eight thousand, nine hundred eighteen".