3890279126281 has 2 divisors, whose sum is σ = 3890279126282. Its totient is φ = 3890279126280.

The previous prime is 3890279126243. The next prime is 3890279126443. The reversal of 3890279126281 is 1826219720983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3187263954681 + 703015171600 = 1785291^2 + 838460^2 .

It is a cyclic number.

It is not a de Polignac number, because 3890279126281 - 2¹⁵ = 3890279093513 is a prime.

It is a super-3 number, since 3×3890279126281³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (3890279126681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945139563140 + 1945139563141.

It is an arithmetic number, because the mean of its divisors is an integer number (1945139563141).

Almost surely, 2^{3890279126281} is an apocalyptic number.

It is an amenable number.

3890279126281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3890279126281 is an equidigital number, since it uses as much as digits as its factorization.

3890279126281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 3890279126281 in words is "three trillion, eight hundred ninety billion, two hundred seventy-nine million, one hundred twenty-six thousand, two hundred eighty-one".