7438340450 has 18 divisors (see below), whose sum is σ = 13836447651. Its totient is φ = 2975092240.

The previous prime is 7438340449. The next prime is 7438340513. The reversal of 7438340450 is 540438347.

It can be written as a sum of positive squares in 5 ways, for example, as 4271014609 + 3167325841 = 65353^2 + 56279^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=60985.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 603752 + ... + 615948.

Almost surely, 2^7438340450 is an apocalyptic number.

7438340450 is a deficient number, since it is larger than the sum of its proper divisors (6398107201).

7438340450 is an frugal number, since it uses more digits than its factorization.

7438340450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24406 (or 12204 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The square root of 7438340450 is about 86245.8141013232. The cubic root of 7438340450 is about 1952.0548533993.

Adding to 7438340450 its reverse (540438347), we get a palindrome (7978778797).

The spelling of 7438340450 in words is "seven billion, four hundred thirty-eight million, three hundred forty thousand, four hundred fifty".