3878813401 has 2 divisors, whose sum is σ = 3878813402. Its totient is φ = 3878813400.

The previous prime is 3878813371. The next prime is 3878813413. The reversal of 3878813401 is 1043188783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3228512400 + 650301001 = 56820^2 + 25501^2 .

It is a cyclic number.

It is not a de Polignac number, because 3878813401 - 2⁵ = 3878813369 is a prime.

It is a super-3 number, since 3×3878813401³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3878813101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939406700 + 1939406701.

It is an arithmetic number, because the mean of its divisors is an integer number (1939406701).

Almost surely, 2^3878813401 is an apocalyptic number.

It is an amenable number.

3878813401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878813401 is an equidigital number, since it uses as much as digits as its factorization.

3878813401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 3878813401 is about 62280.1204318039. The cubic root of 3878813401 is about 1571.2053978787.

The spelling of 3878813401 in words is "three billion, eight hundred seventy-eight million, eight hundred thirteen thousand, four hundred one".