1642427603 has 2 divisors, whose sum is σ = 1642427604. Its totient is φ = 1642427602.

The previous prime is 1642427581. The next prime is 1642427629. The reversal of 1642427603 is 3067242461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1642427603 - 2²⁶ = 1575318739 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1642427503) 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, 821213801 + 821213802.

It is an arithmetic number, because the mean of its divisors is an integer number (821213802).

Almost surely, 2^1642427603 is an apocalyptic number.

1642427603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642427603 is an equidigital number, since it uses as much as digits as its factorization.

1642427603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 1642427603 is about 40526.8750707478. The cubic root of 1642427603 is about 1179.8552927499.

The spelling of 1642427603 in words is "one billion, six hundred forty-two million, four hundred twenty-seven thousand, six hundred three".