3936849509512 has 8 divisors (see below), whose sum is σ = 7381592830350. Its totient is φ = 1968424754752.

The previous prime is 3936849509447. The next prime is 3936849509519. The reversal of 3936849509512 is 2159059486393.

It can be written as a sum of positive squares in only one way, i.e., 3244948287876 + 691901221636 = 1801374^2 + 831806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3936849509519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246053094337 + ... + 246053094352.

Almost surely, 2^{3936849509512} is an apocalyptic number.

It is an amenable number.

3936849509512 is a deficient number, since it is larger than the sum of its proper divisors (3444743320838).

3936849509512 is a wasteful number, since it uses less digits than its factorization.

3936849509512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492106188695 (or 492106188691 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 64.

The spelling of 3936849509512 in words is "three trillion, nine hundred thirty-six billion, eight hundred forty-nine million, five hundred nine thousand, five hundred twelve".