7638937043 has 4 divisors (see below), whose sum is σ = 7652176680. Its totient is φ = 7625697408.

The previous prime is 7638937039. The next prime is 7638937079. The reversal of 7638937043 is 3407398367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3407398367 = 46447 ⋅73361.

It is a cyclic number.

It is not a de Polignac number, because 7638937043 - 2² = 7638937039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7638936982 and 7638937000.

It is not an unprimeable number, because it can be changed into a prime (7638937003) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6618953 + ... + 6620106.

It is an arithmetic number, because the mean of its divisors is an integer number (1913044170).

Almost surely, 2^7638937043 is an apocalyptic number.

7638937043 is a deficient number, since it is larger than the sum of its proper divisors (13239637).

7638937043 is a wasteful number, since it uses less digits than its factorization.

7638937043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239636.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The square root of 7638937043 is about 87401.0128259393. The cubic root of 7638937043 is about 1969.4470557691.

The spelling of 7638937043 in words is "seven billion, six hundred thirty-eight million, nine hundred thirty-seven thousand, forty-three".