1963775585338 has 12 divisors (see below), whose sum is σ = 3426588011322. Its totient is φ = 841618107960.

The previous prime is 1963775585329. The next prime is 1963775585353. The reversal of 1963775585338 is 8335855773691.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1576875413169 + 386900172169 = 1255737^2 + 622013^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10019263093 + ... + 10019263288.

Almost surely, 2^{1963775585338} is an apocalyptic number.

1963775585338 is a deficient number, since it is larger than the sum of its proper divisors (1462812425984).

1963775585338 is a wasteful number, since it uses less digits than its factorization.

1963775585338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20038526397 (or 20038526390 counting only the distinct ones).

The product of its digits is 571536000, while the sum is 70.

The spelling of 1963775585338 in words is "one trillion, nine hundred sixty-three billion, seven hundred seventy-five million, five hundred eighty-five thousand, three hundred thirty-eight".