1965953914 has 4 divisors (see below), whose sum is σ = 2948930874. Its totient is φ = 982976956.

The previous prime is 1965953909. The next prime is 1965953971. The reversal of 1965953914 is 4193595691.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1012194225 + 953759689 = 31815^2 + 30883^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491488477 + ... + 491488480.

Almost surely, 2^1965953914 is an apocalyptic number.

1965953914 is a deficient number, since it is larger than the sum of its proper divisors (982976960).

1965953914 is an equidigital number, since it uses as much as digits as its factorization.

1965953914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982976959.

The product of its digits is 1312200, while the sum is 52.

The square root of 1965953914 is about 44339.0788582713. The cubic root of 1965953914 is about 1252.7308645450.

The spelling of 1965953914 in words is "one billion, nine hundred sixty-five million, nine hundred fifty-three thousand, nine hundred fourteen".