1047117605 has 4 divisors (see below), whose sum is σ = 1256541132. Its totient is φ = 837694080.

The previous prime is 1047117583. The next prime is 1047117629. The reversal of 1047117605 is 5067117401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5067117401 = 1901 ⋅2665501.

It can be written as a sum of positive squares in 2 ways, for example, as 810142369 + 236975236 = 28463^2 + 15394^2 .

It is not a de Polignac number, because 1047117605 - 2²⁰ = 1046069029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104711756 + ... + 104711765.

It is an arithmetic number, because the mean of its divisors is an integer number (314135283).

Almost surely, 2^1047117605 is an apocalyptic number.

It is an amenable number.

1047117605 is a deficient number, since it is larger than the sum of its proper divisors (209423527).

1047117605 is an equidigital number, since it uses as much as digits as its factorization.

1047117605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209423526.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1047117605 is about 32359.1966062200. The cubic root of 1047117605 is about 1015.4654550235.

The spelling of 1047117605 in words is "one billion, forty-seven million, one hundred seventeen thousand, six hundred five".