1632232561 has 8 divisors (see below), whose sum is σ = 1656072000. Its totient is φ = 1608416880.

The previous prime is 1632232531. The next prime is 1632232579. The reversal of 1632232561 is 1652322361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1632232561 - 2⁵ = 1632232529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1632232501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169915 + ... + 179263.

It is an arithmetic number, because the mean of its divisors is an integer number (207009000).

Almost surely, 2^1632232561 is an apocalyptic number.

It is an amenable number.

1632232561 is a deficient number, since it is larger than the sum of its proper divisors (23839439).

1632232561 is an equidigital number, since it uses as much as digits as its factorization.

1632232561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11879.

The product of its digits is 12960, while the sum is 31.

The square root of 1632232561 is about 40400.8980221975. The cubic root of 1632232561 is about 1177.4089852314.

The spelling of 1632232561 in words is "one billion, six hundred thirty-two million, two hundred thirty-two thousand, five hundred sixty-one".