7342705638 has 12 divisors (see below), whose sum is σ = 15909195588. Its totient is φ = 2447568540.

The previous prime is 7342705631. The next prime is 7342705661. The reversal of 7342705638 is 8365072437.

7342705638 is a `hidden beast` number, since 7 + 3 + 4 + 2 + 7 + 0 + 5 + 638 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7342705593 and 7342705602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7342705631) 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 5 ways as a sum of consecutive naturals, for example, 203964028 + ... + 203964063.

It is an arithmetic number, because the mean of its divisors is an integer number (1325766299).

Almost surely, 2^7342705638 is an apocalyptic number.

7342705638 is an abundant number, since it is smaller than the sum of its proper divisors (8566489950).

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

7342705638 is a wasteful number, since it uses less digits than its factorization.

7342705638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407928099 (or 407928096 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 7342705638 is about 85689.5888541893. The cubic root of 7342705638 is about 1943.6528793290.

The spelling of 7342705638 in words is "seven billion, three hundred forty-two million, seven hundred five thousand, six hundred thirty-eight".