1604312269 has 4 divisors (see below), whose sum is σ = 1833499744. Its totient is φ = 1375124796.

The previous prime is 1604312263. The next prime is 1604312273. The reversal of 1604312269 is 9622134061.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604312269 is a prime.

It is a super-2 number, since 2×1604312269² = 5147635712927856722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604312263) 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, 114593727 + ... + 114593740.

It is an arithmetic number, because the mean of its divisors is an integer number (458374936).

Almost surely, 2^1604312269 is an apocalyptic number.

It is an amenable number.

1604312269 is a deficient number, since it is larger than the sum of its proper divisors (229187475).

1604312269 is an equidigital number, since it uses as much as digits as its factorization.

1604312269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229187474.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1604312269 is about 40053.8670917054. The cubic root of 1604312269 is about 1170.6569152895.

The spelling of 1604312269 in words is "one billion, six hundred four million, three hundred twelve thousand, two hundred sixty-nine".