28923803749 has 2 divisors, whose sum is σ = 28923803750. Its totient is φ = 28923803748.

The previous prime is 28923803717. The next prime is 28923803809. The reversal of 28923803749 is 94730832982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27694950724 + 1228853025 = 166418^2 + 35055^2 .

It is a cyclic number.

It is not a de Polignac number, because 28923803749 - 2⁵ = 28923803717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28923803749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28923809749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461901874 + 14461901875.

It is an arithmetic number, because the mean of its divisors is an integer number (14461901875).

Almost surely, 2^28923803749 is an apocalyptic number.

It is an amenable number.

28923803749 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923803749 is an equidigital number, since it uses as much as digits as its factorization.

28923803749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 28923803749 in words is "twenty-eight billion, nine hundred twenty-three million, eight hundred three thousand, seven hundred forty-nine".