3965736879738 has 48 divisors (see below), whose sum is σ = 8982164567040. Its totient is φ = 1296970502256.

The previous prime is 3965736879701. The next prime is 3965736879739. The reversal of 3965736879738 is 8379786375693.

3965736879738 is a `hidden beast` number, since 3 + 9 + 6 + 573 + 6 + 8 + 7 + 9 + 7 + 38 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3965736879739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12920506 + ... + 13223877.

It is an arithmetic number, because the mean of its divisors is an integer number (187128428480).

Almost surely, 2^{3965736879738} is an apocalyptic number.

3965736879738 is an abundant number, since it is smaller than the sum of its proper divisors (5016427687302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3965736879738 is a wasteful number, since it uses less digits than its factorization.

3965736879738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26144500 (or 26144441 counting only the distinct ones).

The product of its digits is 8641624320, while the sum is 81.

The spelling of 3965736879738 in words is "three trillion, nine hundred sixty-five billion, seven hundred thirty-six million, eight hundred seventy-nine thousand, seven hundred thirty-eight".