1605452541 has 32 divisors (see below), whose sum is σ = 2671377408. Its totient is φ = 833197440.

The previous prime is 1605452507. The next prime is 1605452543. The reversal of 1605452541 is 1452545061.

It is not a de Polignac number, because 1605452541 - 2¹¹ = 1605450493 is a prime.

It is a super-2 number, since 2×1605452541² = 5154955722806713362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605452543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293665 + ... + 299081.

It is an arithmetic number, because the mean of its divisors is an integer number (83480544).

Almost surely, 2^1605452541 is an apocalyptic number.

1605452541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1605452541 is a deficient number, since it is larger than the sum of its proper divisors (1065924867).

1605452541 is a wasteful number, since it uses less digits than its factorization.

1605452541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6721.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1605452541 is about 40068.0987944275. The cubic root of 1605452541 is about 1170.9341994563.

The spelling of 1605452541 in words is "one billion, six hundred five million, four hundred fifty-two thousand, five hundred forty-one".