9640850538 has 32 divisors (see below), whose sum is σ = 21759917760. Its totient is φ = 2820728960.

The previous prime is 9640850537. The next prime is 9640850539. The reversal of 9640850538 is 8350580469.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9640850537) and next prime (9640850539).

It is not an unprimeable number, because it can be changed into a prime (9640850537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2516595 + ... + 2520422.

It is an arithmetic number, because the mean of its divisors is an integer number (679997430).

Almost surely, 2^9640850538 is an apocalyptic number.

9640850538 is an abundant number, since it is smaller than the sum of its proper divisors (12119067222).

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

9640850538 is a wasteful number, since it uses less digits than its factorization.

9640850538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037062.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 9640850538 is about 98187.8329427837. The cubic root of 9640850538 is about 2128.3274679131.

The spelling of 9640850538 in words is "nine billion, six hundred forty million, eight hundred fifty thousand, five hundred thirty-eight".