1604009303 has 4 divisors (see below), whose sum is σ = 1727394648. Its totient is φ = 1480623960.

The previous prime is 1604009221. The next prime is 1604009327. The reversal of 1604009303 is 3039004061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3039004061 = 22481 ⋅135181.

It is a cyclic number.

It is not a de Polignac number, because 1604009303 - 2²⁶ = 1536900439 is a prime.

It is a super-2 number, since 2×1604009303² = 5145691688221091618, 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 (1604029303) 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, 61692653 + ... + 61692678.

It is an arithmetic number, because the mean of its divisors is an integer number (431848662).

Almost surely, 2^1604009303 is an apocalyptic number.

1604009303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1604009303 is a deficient number, since it is larger than the sum of its proper divisors (123385345).

1604009303 is a wasteful number, since it uses less digits than its factorization.

1604009303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123385344.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1604009303 is about 40050.0849312458. The cubic root of 1604009303 is about 1170.5832198338.

The spelling of 1604009303 in words is "one billion, six hundred four million, nine thousand, three hundred three".