9928638703 has 2 divisors, whose sum is σ = 9928638704. Its totient is φ = 9928638702.

The previous prime is 9928638701. The next prime is 9928638721. The reversal of 9928638703 is 3078368299.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9928638703 - 2¹ = 9928638701 is a prime.

Together with 9928638701, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9928638701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4964319351 + 4964319352.

It is an arithmetic number, because the mean of its divisors is an integer number (4964319352).

Almost surely, 2^9928638703 is an apocalyptic number.

9928638703 is a deficient number, since it is larger than the sum of its proper divisors (1).

9928638703 is an equidigital number, since it uses as much as digits as its factorization.

9928638703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The square root of 9928638703 is about 99642.5546792132. The cubic root of 9928638703 is about 2149.2976759925.

The spelling of 9928638703 in words is "nine billion, nine hundred twenty-eight million, six hundred thirty-eight thousand, seven hundred three".