1209053713 has 4 divisors (see below), whose sum is σ = 1381775680. Its totient is φ = 1036331748.

The previous prime is 1209053707. The next prime is 1209053717. The reversal of 1209053713 is 3173509021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1209053713 - 2¹³ = 1209045521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1209053717) 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, 86360973 + ... + 86360986.

It is an arithmetic number, because the mean of its divisors is an integer number (345443920).

Almost surely, 2^1209053713 is an apocalyptic number.

It is an amenable number.

1209053713 is a deficient number, since it is larger than the sum of its proper divisors (172721967).

1209053713 is an equidigital number, since it uses as much as digits as its factorization.

1209053713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172721966.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1209053713 is about 34771.4496821746. The cubic root of 1209053713 is about 1065.3243776691.

The spelling of 1209053713 in words is "one billion, two hundred nine million, fifty-three thousand, seven hundred thirteen".