1651242133 has 2 divisors, whose sum is σ = 1651242134. Its totient is φ = 1651242132.

The previous prime is 1651242127. The next prime is 1651242137. The reversal of 1651242133 is 3312421561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 891798769 + 759443364 = 29863^2 + 27558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651242133 - 2¹⁷ = 1651111061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651242137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825621066 + 825621067.

It is an arithmetic number, because the mean of its divisors is an integer number (825621067).

Almost surely, 2^1651242133 is an apocalyptic number.

It is an amenable number.

1651242133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651242133 is an equidigital number, since it uses as much as digits as its factorization.

1651242133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 1651242133 is about 40635.4787470260. The cubic root of 1651242133 is about 1181.9621985195.

Adding to 1651242133 its reverse (3312421561), we get a palindrome (4963663694).

The spelling of 1651242133 in words is "one billion, six hundred fifty-one million, two hundred forty-two thousand, one hundred thirty-three".