18829432436 has 6 divisors (see below), whose sum is σ = 32951506770. Its totient is φ = 9414716216.

The previous prime is 18829432399. The next prime is 18829432439. The reversal of 18829432436 is 63423492881.

It can be written as a sum of positive squares in only one way, i.e., 15007720036 + 3821712400 = 122506^2 + 61820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18829432439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2353679051 + ... + 2353679058.

It is an arithmetic number, because the mean of its divisors is an integer number (5491917795).

Almost surely, 2^18829432436 is an apocalyptic number.

It is an amenable number.

18829432436 is a deficient number, since it is larger than the sum of its proper divisors (14122074334).

18829432436 is a wasteful number, since it uses less digits than its factorization.

18829432436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707358113 (or 4707358111 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The spelling of 18829432436 in words is "eighteen billion, eight hundred twenty-nine million, four hundred thirty-two thousand, four hundred thirty-six".