18413629216 has 24 divisors (see below), whose sum is σ = 36259089804. Its totient is φ = 9204971520.

The previous prime is 18413629211. The next prime is 18413629217. The reversal of 18413629216 is 61292631481.

It can be written as a sum of positive squares in 2 ways, for example, as 12055161616 + 6358467600 = 109796^2 + 79740^2 .

It is not an unprimeable number, because it can be changed into a prime (18413629211) 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, 112476 + ... + 222436.

Almost surely, 2^18413629216 is an apocalyptic number.

18413629216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18413629216 is a deficient number, since it is larger than the sum of its proper divisors (17845460588).

18413629216 is a wasteful number, since it uses less digits than its factorization.

18413629216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115204 (or 115196 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The spelling of 18413629216 in words is "eighteen billion, four hundred thirteen million, six hundred twenty-nine thousand, two hundred sixteen".