1963960249 has 4 divisors (see below), whose sum is σ = 1969009380. Its totient is φ = 1958911120.

The previous prime is 1963960237. The next prime is 1963960279. The reversal of 1963960249 is 9420693691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1408651024 + 555309225 = 37532^2 + 23565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1963960249 - 2⁵ = 1963960217 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1963960279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523982 + ... + 2524759.

It is an arithmetic number, because the mean of its divisors is an integer number (492252345).

Almost surely, 2^1963960249 is an apocalyptic number.

It is an amenable number.

1963960249 is a deficient number, since it is larger than the sum of its proper divisors (5049131).

1963960249 is an equidigital number, since it uses as much as digits as its factorization.

1963960249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049130.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 1963960249 is about 44316.5911256721. The cubic root of 1963960249 is about 1252.3072584133.

The spelling of 1963960249 in words is "one billion, nine hundred sixty-three million, nine hundred sixty thousand, two hundred forty-nine".