1604316261 has 8 divisors (see below), whose sum is σ = 2153255104. Its totient is φ = 1062460800.

The previous prime is 1604316251. The next prime is 1604316289. The reversal of 1604316261 is 1626134061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1604316261 - 2²¹ = 1602219109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604316251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770316 + ... + 1771221.

It is an arithmetic number, because the mean of its divisors is an integer number (269156888).

Almost surely, 2^1604316261 is an apocalyptic number.

It is an amenable number.

1604316261 is a deficient number, since it is larger than the sum of its proper divisors (548938843).

1604316261 is a wasteful number, since it uses less digits than its factorization.

1604316261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541691.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1604316261 is about 40053.9169245656. The cubic root of 1604316261 is about 1170.6578862680.

The spelling of 1604316261 in words is "one billion, six hundred four million, three hundred sixteen thousand, two hundred sixty-one".