1645132351 has 2 divisors, whose sum is σ = 1645132352. Its totient is φ = 1645132350.

The previous prime is 1645132297. The next prime is 1645132367. The reversal of 1645132351 is 1532315461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1645132351 - 2¹¹ = 1645130303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1645135351) 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, 822566175 + 822566176.

It is an arithmetic number, because the mean of its divisors is an integer number (822566176).

Almost surely, 2^1645132351 is an apocalyptic number.

1645132351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645132351 is an equidigital number, since it uses as much as digits as its factorization.

1645132351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 1645132351 is about 40560.2311507220. The cubic root of 1645132351 is about 1180.5025990253.

The spelling of 1645132351 in words is "one billion, six hundred forty-five million, one hundred thirty-two thousand, three hundred fifty-one".