18887601450 has 48 divisors (see below), whose sum is σ = 46903087296. Its totient is φ = 5030044800.

The previous prime is 18887601437. The next prime is 18887601493. The reversal of 18887601450 is 5410678881.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18887601450.

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, 31419 + ... + 196881.

It is an arithmetic number, because the mean of its divisors is an integer number (977147652).

Almost surely, 2^18887601450 is an apocalyptic number.

18887601450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18887601450 is an abundant number, since it is smaller than the sum of its proper divisors (28015485846).

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

18887601450 is a wasteful number, since it uses less digits than its factorization.

18887601450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166239 (or 166234 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 18887601450 in words is "eighteen billion, eight hundred eighty-seven million, six hundred one thousand, four hundred fifty".