3986161903645 has 16 divisors (see below), whose sum is σ = 4991618282112. Its totient is φ = 3050127432000.

The previous prime is 3986161903631. The next prime is 3986161903649. The reversal of 3986161903645 is 5463091616893.

It is a de Polignac number, because none of the positive numbers 2^k-3986161903645 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986161903649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1460770 + ... + 3179020.

It is an arithmetic number, because the mean of its divisors is an integer number (311976142632).

Almost surely, 2^{3986161903645} is an apocalyptic number.

It is an amenable number.

3986161903645 is a deficient number, since it is larger than the sum of its proper divisors (1005456378467).

3986161903645 is a wasteful number, since it uses less digits than its factorization.

3986161903645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738452.

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 3986161903645 in words is "three trillion, nine hundred eighty-six billion, one hundred sixty-one million, nine hundred three thousand, six hundred forty-five".