18830391081450 has 48 divisors (see below), whose sum is σ = 50291629108896. Its totient is φ = 4635173188800.

The previous prime is 18830391081443. The next prime is 18830391081479. The reversal of 18830391081450 is 5418019303881.

It is a junction number, because it is equal to n+sod(n) for n = 18830391081393 and 18830391081402.

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, 4828303456 + ... + 4828307355.

It is an arithmetic number, because the mean of its divisors is an integer number (1047742273102).

Almost surely, 2^{18830391081450} is an apocalyptic number.

18830391081450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18830391081450 is an abundant number, since it is smaller than the sum of its proper divisors (31461238027446).

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

18830391081450 is a wasteful number, since it uses less digits than its factorization.

18830391081450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9656610839 (or 9656610834 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 18830391081450 in words is "eighteen trillion, eight hundred thirty billion, three hundred ninety-one million, eighty-one thousand, four hundred fifty".