3811424827381 has 2 divisors, whose sum is σ = 3811424827382. Its totient is φ = 3811424827380.

The previous prime is 3811424827339. The next prime is 3811424827393. The reversal of 3811424827381 is 1837284241183.

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., 3376571627025 + 434853200356 = 1837545^2 + 659434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3811424827381 is a prime.

It is a super-2 number, since 2×3811424827381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3811424827681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905712413690 + 1905712413691.

It is an arithmetic number, because the mean of its divisors is an integer number (1905712413691).

Almost surely, 2^{3811424827381} is an apocalyptic number.

It is an amenable number.

3811424827381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3811424827381 is an equidigital number, since it uses as much as digits as its factorization.

3811424827381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 52.

The spelling of 3811424827381 in words is "three trillion, eight hundred eleven billion, four hundred twenty-four million, eight hundred twenty-seven thousand, three hundred eighty-one".