28114387493 has 2 divisors, whose sum is σ = 28114387494. Its totient is φ = 28114387492.

The previous prime is 28114387487. The next prime is 28114387523. The reversal of 28114387493 is 39478341182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27874973764 + 239413729 = 166958^2 + 15473^2 .

It is a cyclic number.

It is not a de Polignac number, because 28114387493 - 2¹² = 28114383397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28114387453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14057193746 + 14057193747.

It is an arithmetic number, because the mean of its divisors is an integer number (14057193747).

Almost surely, 2^28114387493 is an apocalyptic number.

It is an amenable number.

28114387493 is a deficient number, since it is larger than the sum of its proper divisors (1).

28114387493 is an equidigital number, since it uses as much as digits as its factorization.

28114387493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The spelling of 28114387493 in words is "twenty-eight billion, one hundred fourteen million, three hundred eighty-seven thousand, four hundred ninety-three".