18829418550 has 48 divisors (see below), whose sum is σ = 46711510272. Its totient is φ = 5019613600.

The previous prime is 18829418539. The next prime is 18829418563. The reversal of 18829418550 is 5581492881.

It is a junction number, because it is equal to n+sod(n) for n = 18829418493 and 18829418502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 511255 + ... + 546845.

It is an arithmetic number, because the mean of its divisors is an integer number (973156464).

Almost surely, 2^18829418550 is an apocalyptic number.

18829418550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18829418550 is an abundant number, since it is smaller than the sum of its proper divisors (27882091722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18829418550 is a wasteful number, since it uses less digits than its factorization.

18829418550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39133 (or 39128 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 51.

The spelling of 18829418550 in words is "eighteen billion, eight hundred twenty-nine million, four hundred eighteen thousand, five hundred fifty".