1963421767 has 2 divisors, whose sum is σ = 1963421768. Its totient is φ = 1963421766.

The previous prime is 1963421737. The next prime is 1963421777. The reversal of 1963421767 is 7671243691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1963421767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1963421737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981710883 + 981710884.

It is an arithmetic number, because the mean of its divisors is an integer number (981710884).

Almost surely, 2^1963421767 is an apocalyptic number.

1963421767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963421767 is an equidigital number, since it uses as much as digits as its factorization.

1963421767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 1963421767 is about 44310.5153095741. The cubic root of 1963421767 is about 1252.1927946985.

The spelling of 1963421767 in words is "one billion, nine hundred sixty-three million, four hundred twenty-one thousand, seven hundred sixty-seven".