7638340054 has 4 divisors (see below), whose sum is σ = 11457510084. Its totient is φ = 3819170026.

The previous prime is 7638340033. The next prime is 7638340067. The reversal of 7638340054 is 4500438367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4500438367 = 83 ⋅54222149.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7638339989 and 7638340016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909585012 + ... + 1909585015.

It is an arithmetic number, because the mean of its divisors is an integer number (2864377521).

Almost surely, 2^7638340054 is an apocalyptic number.

7638340054 is a deficient number, since it is larger than the sum of its proper divisors (3819170030).

7638340054 is a wasteful number, since it uses less digits than its factorization.

7638340054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819170029.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 7638340054 is about 87397.5975299093. The cubic root of 7638340054 is about 1969.3957498150.

The spelling of 7638340054 in words is "seven billion, six hundred thirty-eight million, three hundred forty thousand, fifty-four".