1315445573 has 8 divisors (see below), whose sum is σ = 1421252448. Its totient is φ = 1210298544.

The previous prime is 1315445507. The next prime is 1315445587. The reversal of 1315445573 is 3755445131.

It is a happy number.

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

It is not a de Polignac number, because 1315445573 - 2¹⁰ = 1315444549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315442573) 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, 160811 + ... + 168792.

It is an arithmetic number, because the mean of its divisors is an integer number (177656556).

Almost surely, 2^1315445573 is an apocalyptic number.

1315445573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1315445573 is a deficient number, since it is larger than the sum of its proper divisors (105806875).

1315445573 is a wasteful number, since it uses less digits than its factorization.

1315445573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329923.

The product of its digits is 126000, while the sum is 38.

The square root of 1315445573 is about 36269.0718519236. The cubic root of 1315445573 is about 1095.6982329048.

The spelling of 1315445573 in words is "one billion, three hundred fifteen million, four hundred forty-five thousand, five hundred seventy-three".