3854781481 has 2 divisors, whose sum is σ = 3854781482. Its totient is φ = 3854781480.

The previous prime is 3854781451. The next prime is 3854781523. The reversal of 3854781481 is 1841874583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3854547225 + 234256 = 62085^2 + 484^2 .

It is an emirp because it is prime and its reverse (1841874583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3854781481 - 2⁷ = 3854781353 is a prime.

It is a super-2 number, since 2×3854781481² = 29718680532521106722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3854781451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927390740 + 1927390741.

It is an arithmetic number, because the mean of its divisors is an integer number (1927390741).

Almost surely, 2^3854781481 is an apocalyptic number.

It is an amenable number.

3854781481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3854781481 is an equidigital number, since it uses as much as digits as its factorization.

3854781481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 49.

The square root of 3854781481 is about 62086.8865461943. The cubic root of 3854781481 is about 1567.9537734587.

The spelling of 3854781481 in words is "three billion, eight hundred fifty-four million, seven hundred eighty-one thousand, four hundred eighty-one".