9138937650 has 96 divisors (see below), whose sum is σ = 23262165888. Its totient is φ = 2373580800.

The previous prime is 9138937637. The next prime is 9138937651. The reversal of 9138937650 is 567398319.

It is a junction number, because it is equal to n+sod(n) for n = 9138937593 and 9138937602.

It is not an unprimeable number, because it can be changed into a prime (9138937651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 937602 + ... + 947298.

It is an arithmetic number, because the mean of its divisors is an integer number (242314228).

Almost surely, 2^9138937650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9138937650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11631082944).

9138937650 is an abundant number, since it is smaller than the sum of its proper divisors (14123228238).

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

9138937650 is a wasteful number, since it uses less digits than its factorization.

9138937650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9876 (or 9871 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 9138937650 is about 95597.7910309647. The cubic root of 9138937650 is about 2090.7329869527.

The spelling of 9138937650 in words is "nine billion, one hundred thirty-eight million, nine hundred thirty-seven thousand, six hundred fifty".