1100785745 has 4 divisors (see below), whose sum is σ = 1320942900. Its totient is φ = 880628592.

The previous prime is 1100785661. The next prime is 1100785759. The reversal of 1100785745 is 5475870011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 560316241 + 540469504 = 23671^2 + 23248^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100785745 - 2⁸ = 1100785489 is a prime.

It is a super-3 number, since 3×1100785745³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100785699 and 1100785708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110078570 + ... + 110078579.

It is an arithmetic number, because the mean of its divisors is an integer number (330235725).

Almost surely, 2^1100785745 is an apocalyptic number.

It is an amenable number.

1100785745 is a deficient number, since it is larger than the sum of its proper divisors (220157155).

1100785745 is an equidigital number, since it uses as much as digits as its factorization.

1100785745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220157154.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 1100785745 is about 33178.0913405217. The cubic root of 1100785745 is about 1032.5258475434.

The spelling of 1100785745 in words is "one billion, one hundred million, seven hundred eighty-five thousand, seven hundred forty-five".