18829947051 has 12 divisors (see below), whose sum is σ = 28136702880. Its totient is φ = 12120425520.

The previous prime is 18829947049. The next prime is 18829947067. The reversal of 18829947051 is 15074992881.

It is a happy number.

18829947051 is a `hidden beast` number, since 1 + 8 + 82 + 99 + 470 + 5 + 1 = 666.

It is not a de Polignac number, because 18829947051 - 2¹ = 18829947049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18829947011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36072435 + ... + 36072956.

It is an arithmetic number, because the mean of its divisors is an integer number (2344725240).

Almost surely, 2^18829947051 is an apocalyptic number.

18829947051 is a deficient number, since it is larger than the sum of its proper divisors (9306755829).

18829947051 is a wasteful number, since it uses less digits than its factorization.

18829947051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72145426 (or 72145423 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 18829947051 in words is "eighteen billion, eight hundred twenty-nine million, nine hundred forty-seven thousand, fifty-one".