29628849181 has 4 divisors (see below), whose sum is σ = 29631357792. Its totient is φ = 29626340572.

The previous prime is 29628849139. The next prime is 29628849191. The reversal of 29628849181 is 18194882692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29628849181 - 2¹⁹ = 29628324893 is a prime.

It is a super-2 number, since 2×29628849181² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29628849191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236505 + ... + 1260238.

It is an arithmetic number, because the mean of its divisors is an integer number (7407839448).

Almost surely, 2^29628849181 is an apocalyptic number.

It is an amenable number.

29628849181 is a deficient number, since it is larger than the sum of its proper divisors (2508611).

29628849181 is a wasteful number, since it uses less digits than its factorization.

29628849181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508610.

The product of its digits is 3981312, while the sum is 58.

The spelling of 29628849181 in words is "twenty-nine billion, six hundred twenty-eight million, eight hundred forty-nine thousand, one hundred eighty-one".