1963622461 has 2 divisors, whose sum is σ = 1963622462. Its totient is φ = 1963622460.

The previous prime is 1963622411. The next prime is 1963622503. The reversal of 1963622461 is 1642263691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1359396900 + 604225561 = 36870^2 + 24581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1963622461 - 2⁷ = 1963622333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1963622411) 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, 981811230 + 981811231.

It is an arithmetic number, because the mean of its divisors is an integer number (981811231).

Almost surely, 2^1963622461 is an apocalyptic number.

It is an amenable number.

1963622461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963622461 is an equidigital number, since it uses as much as digits as its factorization.

1963622461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 1963622461 is about 44312.7798834603. The cubic root of 1963622461 is about 1252.2354581450.

The spelling of 1963622461 in words is "one billion, nine hundred sixty-three million, six hundred twenty-two thousand, four hundred sixty-one".