1604322461 has 16 divisors (see below), whose sum is σ = 1861908480. Its totient is φ = 1353890160.

The previous prime is 1604322451. The next prime is 1604322491. The reversal of 1604322461 is 1642234061.

It is not a de Polignac number, because 1604322461 - 2²⁶ = 1537213597 is a prime.

It is a super-5 number, since 5×1604322461⁵ (a number of 47 digits) contains 55555 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 (1604322451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449000 + ... + 452558.

It is an arithmetic number, because the mean of its divisors is an integer number (116369280).

Almost surely, 2^1604322461 is an apocalyptic number.

It is an amenable number.

1604322461 is a deficient number, since it is larger than the sum of its proper divisors (257586019).

1604322461 is an equidigital number, since it uses as much as digits as its factorization.

1604322461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1604322461 is about 40053.9943201674. The cubic root of 1604322461 is about 1170.6593942977.

The spelling of 1604322461 in words is "one billion, six hundred four million, three hundred twenty-two thousand, four hundred sixty-one".