18514652450 has 54 divisors (see below), whose sum is σ = 40074240051. Its totient is φ = 6345571680.

The previous prime is 18514652413. The next prime is 18514652489. The reversal of 18514652450 is 5425641581.

It can be written as a sum of positive squares in 5 ways, for example, as 808890481 + 17705761969 = 28441^2 + 133063^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=96215.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18514652398 and 18514652407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6733676 + ... + 6736424.

Almost surely, 2^18514652450 is an apocalyptic number.

18514652450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18514652450 is an abundant number, since it is smaller than the sum of its proper divisors (21559587601).

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

18514652450 is an frugal number, since it uses more digits than its factorization.

18514652450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

The spelling of 18514652450 in words is "eighteen billion, five hundred fourteen million, six hundred fifty-two thousand, four hundred fifty".