29189394861 has 16 divisors (see below), whose sum is σ = 42633484608. Its totient is φ = 17617132800.

The previous prime is 29189394851. The next prime is 29189394863. The reversal of 29189394861 is 16849398192.

It is not a de Polignac number, because 29189394861 - 2⁶ = 29189394797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29189394795 and 29189394804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29189394863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1827166 + ... + 1843071.

It is an arithmetic number, because the mean of its divisors is an integer number (2664592788).

Almost surely, 2^29189394861 is an apocalyptic number.

It is an amenable number.

29189394861 is a deficient number, since it is larger than the sum of its proper divisors (13444089747).

29189394861 is a wasteful number, since it uses less digits than its factorization.

29189394861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670492.

The product of its digits is 6718464, while the sum is 60.

The spelling of 29189394861 in words is "twenty-nine billion, one hundred eighty-nine million, three hundred ninety-four thousand, eight hundred sixty-one".