135798493 has 4 divisors (see below), whose sum is σ = 136232668. Its totient is φ = 135364320.

The previous prime is 135798457. The next prime is 135798497. The reversal of 135798493 is 394897531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 727609 + 135070884 = 853^2 + 11622^2 .

It is a cyclic number.

It is not a de Polignac number, because 135798493 - 2¹³ = 135790301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135798497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216618 + ... + 217243.

It is an arithmetic number, because the mean of its divisors is an integer number (34058167).

Almost surely, 2^135798493 is an apocalyptic number.

It is an amenable number.

135798493 is a deficient number, since it is larger than the sum of its proper divisors (434175).

135798493 is an equidigital number, since it uses as much as digits as its factorization.

135798493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434174.

The product of its digits is 816480, while the sum is 49.

The square root of 135798493 is about 11653.2610457331. The cubic root of 135798493 is about 514.0022066856.

The spelling of 135798493 in words is "one hundred thirty-five million, seven hundred ninety-eight thousand, four hundred ninety-three".