1604367361 has 4 divisors (see below), whose sum is σ = 1604491312. Its totient is φ = 1604243412.

The previous prime is 1604367343. The next prime is 1604367383. The reversal of 1604367361 is 1637634061.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 1637634061 = 7 ⋅233947723.

It is a cyclic number.

It is not a de Polignac number, because 1604367361 - 2⁹ = 1604366849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1604367361.

It is not an unprimeable number, because it can be changed into a prime (1604361361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39951 + ... + 69316.

It is an arithmetic number, because the mean of its divisors is an integer number (401122828).

Almost surely, 2^1604367361 is an apocalyptic number.

It is an amenable number.

1604367361 is a deficient number, since it is larger than the sum of its proper divisors (123951).

1604367361 is a wasteful number, since it uses less digits than its factorization.

1604367361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123950.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 1604367361 is about 40054.5548096593. The cubic root of 1604367361 is about 1170.6703152353.

The spelling of 1604367361 in words is "one billion, six hundred four million, three hundred sixty-seven thousand, three hundred sixty-one".