28158010493 has 2 divisors, whose sum is σ = 28158010494. Its totient is φ = 28158010492.

The previous prime is 28158010481. The next prime is 28158010499. The reversal of 28158010493 is 39401085182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17249670244 + 10908340249 = 131338^2 + 104443^2 .

It is a cyclic number.

It is not a de Polignac number, because 28158010493 - 2²⁴ = 28141233277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28158010493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28158010499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14079005246 + 14079005247.

It is an arithmetic number, because the mean of its divisors is an integer number (14079005247).

Almost surely, 2^28158010493 is an apocalyptic number.

It is an amenable number.

28158010493 is a deficient number, since it is larger than the sum of its proper divisors (1).

28158010493 is an equidigital number, since it uses as much as digits as its factorization.

28158010493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 28158010493 in words is "twenty-eight billion, one hundred fifty-eight million, ten thousand, four hundred ninety-three".