1642632133 has 2 divisors, whose sum is σ = 1642632134. Its totient is φ = 1642632132.

The previous prime is 1642632113. The next prime is 1642632151. The reversal of 1642632133 is 3312362461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036389249 + 606242884 = 32193^2 + 24622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1642632133 - 2⁹ = 1642631621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642632095 and 1642632104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642632113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821316066 + 821316067.

It is an arithmetic number, because the mean of its divisors is an integer number (821316067).

Almost surely, 2^1642632133 is an apocalyptic number.

It is an amenable number.

1642632133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642632133 is an equidigital number, since it uses as much as digits as its factorization.

1642632133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 31.

The square root of 1642632133 is about 40529.3983794480. The cubic root of 1642632133 is about 1179.9042661488.

Adding to 1642632133 its reverse (3312362461), we get a palindrome (4954994594).

The spelling of 1642632133 in words is "one billion, six hundred forty-two million, six hundred thirty-two thousand, one hundred thirty-three".