18801347229 has 48 divisors (see below), whose sum is σ = 32787530880. Its totient is φ = 10141770240.

The previous prime is 18801347189. The next prime is 18801347239. The reversal of 18801347229 is 92274310881.

It is a happy number.

18801347229 is a `hidden beast` number, since 1 + 8 + 80 + 1 + 347 + 229 = 666.

It is not a de Polignac number, because 18801347229 - 2⁷ = 18801347101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18801347239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 308409 + ... + 364305.

It is an arithmetic number, because the mean of its divisors is an integer number (683073560).

Almost surely, 2^18801347229 is an apocalyptic number.

18801347229 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18801347229 is a deficient number, since it is larger than the sum of its proper divisors (13986183651).

18801347229 is a wasteful number, since it uses less digits than its factorization.

18801347229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56210 (or 56207 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 18801347229 in words is "eighteen billion, eight hundred one million, three hundred forty-seven thousand, two hundred twenty-nine".