1300000001573 has 24 divisors (see below), whose sum is σ = 1631065936248. Its totient is φ = 1026995953536.

The previous prime is 1300000001563. The next prime is 1300000001653. The reversal of 1300000001573 is 3751000000031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 450161089 + 1299549840484 = 21217^2 + 1139978^2 .

It is not a de Polignac number, because 1300000001573 - 2¹⁴ = 1299999985189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300000001533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1146686 + ... + 1978607.

It is an arithmetic number, because the mean of its divisors is an integer number (67961080677).

Almost surely, 2^{1300000001573} is an apocalyptic number.

1300000001573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1300000001573 is a deficient number, since it is larger than the sum of its proper divisors (331065934675).

1300000001573 is a wasteful number, since it uses less digits than its factorization.

1300000001573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125973 (or 3125966 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 20.

The spelling of 1300000001573 in words is "one trillion, three hundred billion, one thousand, five hundred seventy-three".