1421641763 has 2 divisors, whose sum is σ = 1421641764. Its totient is φ = 1421641762.

The previous prime is 1421641747. The next prime is 1421641789. The reversal of 1421641763 is 3671461241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421641763 - 2⁴ = 1421641747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421641703) by changing a digit.

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 as a sum of consecutive naturals, namely, 710820881 + 710820882.

It is an arithmetic number, because the mean of its divisors is an integer number (710820882).

Almost surely, 2^1421641763 is an apocalyptic number.

1421641763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421641763 is an equidigital number, since it uses as much as digits as its factorization.

1421641763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 1421641763 is about 37704.6650031531. The cubic root of 1421641763 is about 1124.4238730413.

The spelling of 1421641763 in words is "one billion, four hundred twenty-one million, six hundred forty-one thousand, seven hundred sixty-three".