1745772813 has 12 divisors (see below), whose sum is σ = 2589825628. Its totient is φ = 1132392960.

The previous prime is 1745772799. The next prime is 1745772829. The reversal of 1745772813 is 3182775471.

1745772813 is a `hidden beast` number, since 1 + 74 + 577 + 2 + 8 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1523106729 + 222666084 = 39027^2 + 14922^2 .

It is not a de Polignac number, because 1745772813 - 2¹³ = 1745764621 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 (1745772713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2620948 + ... + 2621613.

Almost surely, 2^1745772813 is an apocalyptic number.

It is an amenable number.

1745772813 is a deficient number, since it is larger than the sum of its proper divisors (844052815).

1745772813 is a wasteful number, since it uses less digits than its factorization.

1745772813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242604 (or 5242601 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 1745772813 is about 41782.4462304447. The cubic root of 1745772813 is about 1204.1000524371.

The spelling of 1745772813 in words is "one billion, seven hundred forty-five million, seven hundred seventy-two thousand, eight hundred thirteen".