7638137206 has 16 divisors (see below), whose sum is σ = 13663252224. Its totient is φ = 3131161704.

The previous prime is 7638137197. The next prime is 7638137209. The reversal of 7638137206 is 6027318367.

It is a super-2 number, since 2×7638137206² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638137209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11860140 + ... + 11860783.

It is an arithmetic number, because the mean of its divisors is an integer number (853953264).

Almost surely, 2^7638137206 is an apocalyptic number.

7638137206 is a deficient number, since it is larger than the sum of its proper divisors (6025115018).

7638137206 is a wasteful number, since it uses less digits than its factorization.

7638137206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23720955.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 7638137206 is about 87396.4370326388. The cubic root of 7638137206 is about 1969.3783162050.

The spelling of 7638137206 in words is "seven billion, six hundred thirty-eight million, one hundred thirty-seven thousand, two hundred six".