1073906905 has 4 divisors (see below), whose sum is σ = 1288688292. Its totient is φ = 859125520.

The previous prime is 1073906903. The next prime is 1073906957. The reversal of 1073906905 is 5096093701.

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 819791424 + 254115481 = 28632^2 + 15941^2 .

It is not a de Polignac number, because 1073906905 - 2¹ = 1073906903 is a prime.

It is a super-3 number, since 3×1073906905³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1073906903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107390686 + ... + 107390695.

It is an arithmetic number, because the mean of its divisors is an integer number (322172073).

Almost surely, 2^1073906905 is an apocalyptic number.

It is an amenable number.

1073906905 is a deficient number, since it is larger than the sum of its proper divisors (214781387).

1073906905 is an equidigital number, since it uses as much as digits as its factorization.

1073906905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214781386.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 1073906905 is about 32770.5188393471. The cubic root of 1073906905 is about 1024.0524751475.

The spelling of 1073906905 in words is "one billion, seventy-three million, nine hundred six thousand, nine hundred five".