1604983461 has 4 divisors (see below), whose sum is σ = 2139977952. Its totient is φ = 1069988972.

The previous prime is 1604983451. The next prime is 1604983483. The reversal of 1604983461 is 1643894061.

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: 1643894061 = 3 ⋅547964687.

It is a cyclic number.

It is not a de Polignac number, because 1604983461 - 2¹³ = 1604975269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604983411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267497241 + ... + 267497246.

It is an arithmetic number, because the mean of its divisors is an integer number (534994488).

Almost surely, 2^1604983461 is an apocalyptic number.

It is an amenable number.

1604983461 is a deficient number, since it is larger than the sum of its proper divisors (534994491).

1604983461 is an equidigital number, since it uses as much as digits as its factorization.

1604983461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534994490.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1604983461 is about 40062.2448322607. The cubic root of 1604983461 is about 1170.8201474360.

The spelling of 1604983461 in words is "one billion, six hundred four million, nine hundred eighty-three thousand, four hundred sixty-one".