1963680331 has 2 divisors, whose sum is σ = 1963680332. Its totient is φ = 1963680330.

The previous prime is 1963680241. The next prime is 1963680377. The reversal of 1963680331 is 1330863691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1963680331 - 2²⁷ = 1829462603 is a prime.

It is a super-2 number, since 2×1963680331² = 7712080884712539122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1963660331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981840165 + 981840166.

It is an arithmetic number, because the mean of its divisors is an integer number (981840166).

Almost surely, 2^1963680331 is an apocalyptic number.

1963680331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963680331 is an equidigital number, since it uses as much as digits as its factorization.

1963680331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 1963680331 is about 44313.4328505477. The cubic root of 1963680331 is about 1252.2477595854.

The spelling of 1963680331 in words is "one billion, nine hundred sixty-three million, six hundred eighty thousand, three hundred thirty-one".