1605415552 has 32 divisors (see below), whose sum is σ = 3444314580. Its totient is φ = 740960256.

The previous prime is 1605415517. The next prime is 1605415561. The reversal of 1605415552 is 2555145061.

It can be written as a sum of positive squares in 2 ways, for example, as 1559934016 + 45481536 = 39496^2 + 6744^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480733 + ... + 484060.

Almost surely, 2^1605415552 is an apocalyptic number.

It is an amenable number.

1605415552 is an abundant number, since it is smaller than the sum of its proper divisors (1838899028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1605415552 is an equidigital number, since it uses as much as digits as its factorization.

1605415552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964820 (or 964808 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1605415552 is about 40067.6372150892. The cubic root of 1605415552 is about 1170.9252067649.

The spelling of 1605415552 in words is "one billion, six hundred five million, four hundred fifteen thousand, five hundred fifty-two".