18195919229 has 8 divisors (see below), whose sum is σ = 18989361600. Its totient is φ = 17402669856.

The previous prime is 18195919223. The next prime is 18195919253. The reversal of 18195919229 is 92291959181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18195919229 - 2⁸ = 18195918973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18195919223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164414 + ... + 251840.

It is an arithmetic number, because the mean of its divisors is an integer number (2373670200).

Almost surely, 2^18195919229 is an apocalyptic number.

It is an amenable number.

18195919229 is a deficient number, since it is larger than the sum of its proper divisors (793442371).

18195919229 is an equidigital number, since it uses as much as digits as its factorization.

18195919229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96499.

The product of its digits is 1049760, while the sum is 56.

The spelling of 18195919229 in words is "eighteen billion, one hundred ninety-five million, nine hundred nineteen thousand, two hundred twenty-nine".