38620946138 has 4 divisors (see below), whose sum is σ = 57931419210. Its totient is φ = 19310473068.

The previous prime is 38620946131. The next prime is 38620946159. The reversal of 38620946138 is 83164902683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38371716769 + 249229369 = 195887^2 + 15787^2 .

It is not an unprimeable number, because it can be changed into a prime (38620946131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9655236533 + ... + 9655236536.

Almost surely, 2^38620946138 is an apocalyptic number.

38620946138 is a deficient number, since it is larger than the sum of its proper divisors (19310473072).

38620946138 is a wasteful number, since it uses less digits than its factorization.

38620946138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19310473071.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 38620946138 in words is "thirty-eight billion, six hundred twenty million, nine hundred forty-six thousand, one hundred thirty-eight".