28188702739 has 2 divisors, whose sum is σ = 28188702740. Its totient is φ = 28188702738.

The previous prime is 28188702719. The next prime is 28188702743. The reversal of 28188702739 is 93720788182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28188702739 - 2¹⁷ = 28188571667 is a prime.

It is a super-2 number, since 2×28188702739² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28188702739.

It is not a weakly prime, because it can be changed into another prime (28188702719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14094351369 + 14094351370.

It is an arithmetic number, because the mean of its divisors is an integer number (14094351370).

Almost surely, 2^28188702739 is an apocalyptic number.

28188702739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28188702739 is an equidigital number, since it uses as much as digits as its factorization.

28188702739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 28188702739 in words is "twenty-eight billion, one hundred eighty-eight million, seven hundred two thousand, seven hundred thirty-nine".