1027106909 has 4 divisors (see below), whose sum is σ = 1027241916. Its totient is φ = 1026971904.

The previous prime is 1027106897. The next prime is 1027106923. The reversal of 1027106909 is 9096017201.

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 738208900 + 288898009 = 27170^2 + 16997^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027106909 - 2¹⁶ = 1027041373 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 (1027106999) 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, 55364 + ... + 71549.

It is an arithmetic number, because the mean of its divisors is an integer number (256810479).

Almost surely, 2^1027106909 is an apocalyptic number.

It is an amenable number.

1027106909 is a deficient number, since it is larger than the sum of its proper divisors (135007).

1027106909 is an equidigital number, since it uses as much as digits as its factorization.

1027106909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135006.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 1027106909 is about 32048.5086860528. The cubic root of 1027106909 is about 1008.9552013134.

The spelling of 1027106909 in words is "one billion, twenty-seven million, one hundred six thousand, nine hundred nine".