1609007201 has 4 divisors (see below), whose sum is σ = 1609106352. Its totient is φ = 1608908052.

The previous prime is 1609007161. The next prime is 1609007209. The reversal of 1609007201 is 1027009061.

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: 1027009061 = 13 ⋅79000697.

It is a cyclic number.

It is not a de Polignac number, because 1609007201 - 2¹⁸ = 1608745057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1609007209) 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, 18911 + ... + 59796.

It is an arithmetic number, because the mean of its divisors is an integer number (402276588).

Almost surely, 2^1609007201 is an apocalyptic number.

It is an amenable number.

1609007201 is a deficient number, since it is larger than the sum of its proper divisors (99151).

1609007201 is an equidigital number, since it uses as much as digits as its factorization.

1609007201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99150.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1609007201 is about 40112.4320005656. The cubic root of 1609007201 is about 1171.7977575930.

The spelling of 1609007201 in words is "one billion, six hundred nine million, seven thousand, two hundred one".