1726319401 has 3 divisors (see below), whose sum is σ = 1726360951. Its totient is φ = 1726277852.

The previous prime is 1726319393. The next prime is 1726319411. The reversal of 1726319401 is 1049136271.

The square root of 1726319401 is 41549.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1049136271 = 457 ⋅2295703.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 1666272400 = 7749^2 + 40820^2 .

It is not a de Polignac number, because 1726319401 - 2³ = 1726319393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1726319411) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20775 + ... + 62323.

Almost surely, 2^1726319401 is an apocalyptic number.

1726319401 is the 41549-th square number.

1726319401 is the 20775-th centered octagonal number.

It is an amenable number.

1726319401 is a deficient number, since it is larger than the sum of its proper divisors (41550).

1726319401 is an frugal number, since it uses more digits than its factorization.

1726319401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83098 (or 41549 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The cubic root of 1726319401 is about 1199.6108462668.

The spelling of 1726319401 in words is "one billion, seven hundred twenty-six million, three hundred nineteen thousand, four hundred one".