18211093229 has 16 divisors (see below), whose sum is σ = 22030502400. Its totient is φ = 14705321904.

The previous prime is 18211093151. The next prime is 18211093279. The reversal of 18211093229 is 92239011281.

It is not a de Polignac number, because 18211093229 - 2³² = 13916125933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18211093192 and 18211093201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18211093279) 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, 358667 + ... + 406280.

It is an arithmetic number, because the mean of its divisors is an integer number (1376906400).

Almost surely, 2^18211093229 is an apocalyptic number.

18211093229 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18211093229 is a deficient number, since it is larger than the sum of its proper divisors (3819409171).

18211093229 is a wasteful number, since it uses less digits than its factorization.

18211093229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765152.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 18211093229 in words is "eighteen billion, two hundred eleven million, ninety-three thousand, two hundred twenty-nine".