1605029441 has 4 divisors (see below), whose sum is σ = 1605246084. Its totient is φ = 1604812800.

The previous prime is 1605029411. The next prime is 1605029467. The reversal of 1605029441 is 1449205061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1449205061 = 29789 ⋅48649.

It can be written as a sum of positive squares in 2 ways, for example, as 1377894400 + 227135041 = 37120^2 + 15071^2 .

It is a cyclic number.

It is not a de Polignac number, because 1605029441 - 2¹⁰ = 1605028417 is a prime.

It is a super-2 number, since 2×1605029441² = 5152239012953544962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1605029398 and 1605029407.

It is not an unprimeable number, because it can be changed into a prime (1605029411) 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, 96800 + ... + 112161.

It is an arithmetic number, because the mean of its divisors is an integer number (401311521).

Almost surely, 2^1605029441 is an apocalyptic number.

It is an amenable number.

1605029441 is a deficient number, since it is larger than the sum of its proper divisors (216643).

1605029441 is an equidigital number, since it uses as much as digits as its factorization.

1605029441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216642.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1605029441 is about 40062.8186851599. The cubic root of 1605029441 is about 1170.8313279866.

The spelling of 1605029441 in words is "one billion, six hundred five million, twenty-nine thousand, four hundred forty-one".