18234321608450 has 24 divisors (see below), whose sum is σ = 34131862653492. Its totient is φ = 7247271769920.

The previous prime is 18234321608351. The next prime is 18234321608527. The reversal of 18234321608450 is 5480612343281.

It can be written as a sum of positive squares in 6 ways, for example, as 449874708529 + 17784446899921 = 670727^2 + 4217161^2 .

It is a super-2 number, since 2×18234321608450² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18234321608395 and 18234321608404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1161413909 + ... + 1161429608.

Almost surely, 2^{18234321608450} is an apocalyptic number.

18234321608450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18234321608450 is a deficient number, since it is larger than the sum of its proper divisors (15897541045042).

18234321608450 is a wasteful number, since it uses less digits than its factorization.

18234321608450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322843686 (or 2322843681 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 18234321608450 in words is "eighteen trillion, two hundred thirty-four billion, three hundred twenty-one million, six hundred eight thousand, four hundred fifty".