1006401373 has 2 divisors, whose sum is σ = 1006401374. Its totient is φ = 1006401372.

The previous prime is 1006401313. The next prime is 1006401379. The reversal of 1006401373 is 3731046001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 985771609 + 20629764 = 31397^2 + 4542^2 .

It is an emirp because it is prime and its reverse (3731046001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1006401373 - 2¹⁷ = 1006270301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006401379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503200686 + 503200687.

It is an arithmetic number, because the mean of its divisors is an integer number (503200687).

Almost surely, 2^1006401373 is an apocalyptic number.

It is an amenable number.

1006401373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006401373 is an equidigital number, since it uses as much as digits as its factorization.

1006401373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1006401373 is about 31723.8297341289. The cubic root of 1006401373 is about 1002.1292540593.

Adding to 1006401373 its reverse (3731046001), we get a palindrome (4737447374).

The spelling of 1006401373 in words is "one billion, six million, four hundred one thousand, three hundred seventy-three".