3846934924981 has 2 divisors, whose sum is σ = 3846934924982. Its totient is φ = 3846934924980.

The previous prime is 3846934924979. The next prime is 3846934924999. The reversal of 3846934924981 is 1894294396483.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3358661002225 + 488273922756 = 1832665^2 + 698766^2 .

It is a cyclic number.

It is not a de Polignac number, because 3846934924981 - 2¹ = 3846934924979 is a prime.

It is a super-2 number, since 2×3846934924981² (a number of 26 digits) contains 22 as substring.

Together with 3846934924979, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3846934924981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3846934024981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1923467462490 + 1923467462491.

It is an arithmetic number, because the mean of its divisors is an integer number (1923467462491).

Almost surely, 2^{3846934924981} is an apocalyptic number.

It is an amenable number.

3846934924981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3846934924981 is an equidigital number, since it uses as much as digits as its factorization.

3846934924981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322486272, while the sum is 70.

The spelling of 3846934924981 in words is "three trillion, eight hundred forty-six billion, nine hundred thirty-four million, nine hundred twenty-four thousand, nine hundred eighty-one".