1965023614849 has 3 divisors (see below), whose sum is σ = 1965025016643. Its totient is φ = 1965022213056.

The previous prime is 1965023614837. The next prime is 1965023614871. The reversal of 1965023614849 is 9484163205691.

The square root of 1965023614849 is 1401793.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1952125924225 + 12897690624 = 1397185^2 + 113568^2 .

It is not a de Polignac number, because 1965023614849 - 2²³ = 1965015226241 is a prime.

It is a super-2 number, since 2×1965023614849² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1965023614793 and 1965023614802.

It is not an unprimeable number, because it can be changed into a prime (1965023614349) by changing a digit.

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 in 2 ways as a sum of consecutive naturals, for example, 700897 + ... + 2102689.

It is an arithmetic number, because the mean of its divisors is an integer number (655008338881).

Almost surely, 2^{1965023614849} is an apocalyptic number.

1965023614849 is the 1401793-rd square number.

1965023614849 is the 700897-th centered octagonal number.

It is an amenable number.

1965023614849 is a deficient number, since it is larger than the sum of its proper divisors (1401794).

1965023614849 is an frugal number, since it uses more digits than its factorization.

1965023614849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803586 (or 1401793 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 1965023614849 in words is "one trillion, nine hundred sixty-five billion, twenty-three million, six hundred fourteen thousand, eight hundred forty-nine".