18887018350 has 12 divisors (see below), whose sum is σ = 35129854224. Its totient is φ = 7554807320.

The previous prime is 18887018341. The next prime is 18887018363. The reversal of 18887018350 is 5381078881.

It is a junction number, because it is equal to n+sod(n) for n = 18887018294 and 18887018303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188870134 + ... + 188870233.

It is an arithmetic number, because the mean of its divisors is an integer number (2927487852).

Almost surely, 2^18887018350 is an apocalyptic number.

18887018350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18887018350 is a deficient number, since it is larger than the sum of its proper divisors (16242835874).

18887018350 is a wasteful number, since it uses less digits than its factorization.

18887018350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377740379 (or 377740374 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 49.

The spelling of 18887018350 in words is "eighteen billion, eight hundred eighty-seven million, eighteen thousand, three hundred fifty".