913201609 has 4 divisors (see below), whose sum is σ = 913286016. Its totient is φ = 913117204.

The previous prime is 913201511. The next prime is 913201633. The reversal of 913201609 is 906102319.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 906102319 = 23 ⋅39395753.

It is a cyclic number.

It is not a de Polignac number, because 913201609 - 2¹⁹ = 912677321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913201649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23089 + ... + 48574.

It is an arithmetic number, because the mean of its divisors is an integer number (228321504).

Almost surely, 2^913201609 is an apocalyptic number.

It is an amenable number.

913201609 is a deficient number, since it is larger than the sum of its proper divisors (84407).

913201609 is a wasteful number, since it uses less digits than its factorization.

913201609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84406.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 913201609 is about 30219.2258173501. The cubic root of 913201609 is about 970.1872345549.

It can be divided in two parts, 91320 and 1609, that added together give a palindrome (92929).

The spelling of 913201609 in words is "nine hundred thirteen million, two hundred one thousand, six hundred nine".