1632754561 has 4 divisors (see below), whose sum is σ = 1633561300. Its totient is φ = 1631947824.

The previous prime is 1632754499. The next prime is 1632754577. The reversal of 1632754561 is 1654572361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1627719025 + 5035536 = 40345^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 1632754561 - 2¹⁵ = 1632721793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1632754261) 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, 400326 + ... + 404383.

It is an arithmetic number, because the mean of its divisors is an integer number (408390325).

Almost surely, 2^1632754561 is an apocalyptic number.

It is an amenable number.

1632754561 is a deficient number, since it is larger than the sum of its proper divisors (806739).

1632754561 is an equidigital number, since it uses as much as digits as its factorization.

1632754561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806738.

The product of its digits is 151200, while the sum is 40.

The square root of 1632754561 is about 40407.3577582103. The cubic root of 1632754561 is about 1177.5344865433.

The spelling of 1632754561 in words is "one billion, six hundred thirty-two million, seven hundred fifty-four thousand, five hundred sixty-one".