1393801573 has 8 divisors (see below), whose sum is σ = 1401475608. Its totient is φ = 1386142464.

The previous prime is 1393801561. The next prime is 1393801621. The reversal of 1393801573 is 3751083931.

It can be written as a sum of positive squares in 4 ways, for example, as 330585124 + 1063216449 = 18182^2 + 32607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1393801573 - 2⁹ = 1393801061 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 (1393801523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218911 + ... + 225187.

It is an arithmetic number, because the mean of its divisors is an integer number (175184451).

Almost surely, 2^1393801573 is an apocalyptic number.

It is an amenable number.

1393801573 is a deficient number, since it is larger than the sum of its proper divisors (7674035).

1393801573 is an equidigital number, since it uses as much as digits as its factorization.

1393801573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7463.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 1393801573 is about 37333.6520179851. The cubic root of 1393801573 is about 1117.0355205429.

The spelling of 1393801573 in words is "one billion, three hundred ninety-three million, eight hundred one thousand, five hundred seventy-three".