8742386450 has 54 divisors (see below), whose sum is σ = 18925688511. Its totient is φ = 2995802880.

The previous prime is 8742386437. The next prime is 8742386453. The reversal of 8742386450 is 546832478.

It can be written as a sum of positive squares in 5 ways, for example, as 2994168961 + 5748217489 = 54719^2 + 75817^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=66115.

It is a super-2 number, since 2×8742386450² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8742386395 and 8742386404.

It is not an unprimeable number, because it can be changed into a prime (8742386453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4627106 + ... + 4628994.

Almost surely, 2^8742386450 is an apocalyptic number.

8742386450 is an abundant number, since it is smaller than the sum of its proper divisors (10183302061).

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

8742386450 is an equidigital number, since it uses as much as digits as its factorization.

8742386450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The square root of 8742386450 is about 93500.7296762972. The cubic root of 8742386450 is about 2060.0448076784.

The spelling of 8742386450 in words is "eight billion, seven hundred forty-two million, three hundred eighty-six thousand, four hundred fifty".