30436378409 has 4 divisors (see below), whose sum is σ = 30750155604. Its totient is φ = 30122601216.

The previous prime is 30436378387. The next prime is 30436378513. The reversal of 30436378409 is 90487363403.

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 17497998400 + 12938380009 = 132280^2 + 113747^2 .

It is a cyclic number.

It is not a de Polignac number, because 30436378409 - 2²⁰ = 30435329833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30436378309) 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, 156888452 + ... + 156888645.

It is an arithmetic number, because the mean of its divisors is an integer number (7687538901).

Almost surely, 2^30436378409 is an apocalyptic number.

It is an amenable number.

30436378409 is a deficient number, since it is larger than the sum of its proper divisors (313777195).

30436378409 is an equidigital number, since it uses as much as digits as its factorization.

30436378409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313777194.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 30436378409 in words is "thirty billion, four hundred thirty-six million, three hundred seventy-eight thousand, four hundred nine".