28013001637 has 2 divisors, whose sum is σ = 28013001638. Its totient is φ = 28013001636.

The previous prime is 28013001623. The next prime is 28013001641. The reversal of 28013001637 is 73610031082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26538364836 + 1474636801 = 162906^2 + 38401^2 .

It is a cyclic number.

It is not a de Polignac number, because 28013001637 - 2¹⁹ = 28012477349 is a prime.

It is a super-3 number, since 3×28013001637³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28013001599 and 28013001608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28013001697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14006500818 + 14006500819.

It is an arithmetic number, because the mean of its divisors is an integer number (14006500819).

Almost surely, 2^28013001637 is an apocalyptic number.

It is an amenable number.

28013001637 is a deficient number, since it is larger than the sum of its proper divisors (1).

28013001637 is an equidigital number, since it uses as much as digits as its factorization.

28013001637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 28013001637 in words is "twenty-eight billion, thirteen million, one thousand, six hundred thirty-seven".