3896031484861 has 2 divisors, whose sum is σ = 3896031484862. Its totient is φ = 3896031484860.

The previous prime is 3896031484789. The next prime is 3896031484883. The reversal of 3896031484861 is 1684841306983.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3548303085636 + 347728399225 = 1883694^2 + 589685^2 .

It is an emirp because it is prime and its reverse (1684841306983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3896031484861 - 2⁷ = 3896031484733 is a prime.

It is a super-2 number, since 2×3896031484861² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3896031484861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3896031484561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948015742430 + 1948015742431.

It is an arithmetic number, because the mean of its divisors is an integer number (1948015742431).

Almost surely, 2^{3896031484861} is an apocalyptic number.

It is an amenable number.

3896031484861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3896031484861 is an equidigital number, since it uses as much as digits as its factorization.

3896031484861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 3896031484861 in words is "three trillion, eight hundred ninety-six billion, thirty-one million, four hundred eighty-four thousand, eight hundred sixty-one".