28838893157 has 2 divisors, whose sum is σ = 28838893158. Its totient is φ = 28838893156.

The previous prime is 28838893151. The next prime is 28838893159. The reversal of 28838893157 is 75139883882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16756266916 + 12082626241 = 129446^2 + 109921^2 .

It is a cyclic number.

It is not a de Polignac number, because 28838893157 - 2¹⁸ = 28838631013 is a prime.

It is a super-2 number, since 2×28838893157² (a number of 22 digits) contains 22 as substring.

Together with 28838893159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28838893157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28838893151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14419446578 + 14419446579.

It is an arithmetic number, because the mean of its divisors is an integer number (14419446579).

Almost surely, 2^28838893157 is an apocalyptic number.

It is an amenable number.

28838893157 is a deficient number, since it is larger than the sum of its proper divisors (1).

28838893157 is an equidigital number, since it uses as much as digits as its factorization.

28838893157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23224320, while the sum is 62.

The spelling of 28838893157 in words is "twenty-eight billion, eight hundred thirty-eight million, eight hundred ninety-three thousand, one hundred fifty-seven".