726874189 has 4 divisors (see below), whose sum is σ = 726963424. Its totient is φ = 726784956.

The previous prime is 726874177. The next prime is 726874201. The reversal of 726874189 is 981478627.

726874189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981478627 = 4219 ⋅232633.

It is an interprime number because it is at equal distance from previous prime (726874177) and next prime (726874201).

It is a cyclic number.

It is not a de Polignac number, because 726874189 - 2²¹ = 724777037 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 (726874789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31017 + ... + 49150.

It is an arithmetic number, because the mean of its divisors is an integer number (181740856).

Almost surely, 2^726874189 is an apocalyptic number.

It is an amenable number.

726874189 is a deficient number, since it is larger than the sum of its proper divisors (89235).

726874189 is an equidigital number, since it uses as much as digits as its factorization.

726874189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89234.

The product of its digits is 1354752, while the sum is 52.

The square root of 726874189 is about 26960.6043886260. The cubic root of 726874189 is about 899.1243289350.

The spelling of 726874189 in words is "seven hundred twenty-six million, eight hundred seventy-four thousand, one hundred eighty-nine".