1604357441 has 4 divisors (see below), whose sum is σ = 1631550000. Its totient is φ = 1577164884.

The previous prime is 1604357383. The next prime is 1604357467. The reversal of 1604357441 is 1447534061.

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 not a de Polignac number, because 1604357441 - 2²⁶ = 1537248577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604357471) 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, 13596191 + ... + 13596308.

It is an arithmetic number, because the mean of its divisors is an integer number (407887500).

Almost surely, 2^1604357441 is an apocalyptic number.

It is an amenable number.

1604357441 is a deficient number, since it is larger than the sum of its proper divisors (27192559).

1604357441 is an equidigital number, since it uses as much as digits as its factorization.

1604357441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27192558.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 1604357441 is about 40054.4309783574. The cubic root of 1604357441 is about 1170.6679024310.

The spelling of 1604357441 in words is "one billion, six hundred four million, three hundred fifty-seven thousand, four hundred forty-one".