1642632466 has 8 divisors (see below), whose sum is σ = 2481934140. Its totient is φ = 815321088.

The previous prime is 1642632389. The next prime is 1642632491. The reversal of 1642632466 is 6642362461.

It can be written as a sum of positive squares in 2 ways, for example, as 1637901841 + 4730625 = 40471^2 + 2175^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2997231 + ... + 2997778.

Almost surely, 2^1642632466 is an apocalyptic number.

1642632466 is a deficient number, since it is larger than the sum of its proper divisors (839301674).

1642632466 is a wasteful number, since it uses less digits than its factorization.

1642632466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995148.

The product of its digits is 248832, while the sum is 40.

The square root of 1642632466 is about 40529.4024875768. The cubic root of 1642632466 is about 1179.9043458802.

The spelling of 1642632466 in words is "one billion, six hundred forty-two million, six hundred thirty-two thousand, four hundred sixty-six".