9640938814 has 16 divisors (see below), whose sum is σ = 16110853920. Its totient is φ = 4296227040.

The previous prime is 9640938793. The next prime is 9640938817. The reversal of 9640938814 is 4188390469.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640938817) 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, 6392442 + ... + 6393949.

It is an arithmetic number, because the mean of its divisors is an integer number (1006928370).

Almost surely, 2^9640938814 is an apocalyptic number.

9640938814 is a deficient number, since it is larger than the sum of its proper divisors (6469915106).

9640938814 is a wasteful number, since it uses less digits than its factorization.

9640938814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12786435.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 9640938814 is about 98188.2824679198. The cubic root of 9640938814 is about 2128.3339638705. Note that the first 3 decimals are identical.

The spelling of 9640938814 in words is "nine billion, six hundred forty million, nine hundred thirty-eight thousand, eight hundred fourteen".