3878197459 has 2 divisors, whose sum is σ = 3878197460. Its totient is φ = 3878197458.

The previous prime is 3878197457. The next prime is 3878197481. The reversal of 3878197459 is 9547918783.

3878197459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3878197459 - 2¹ = 3878197457 is a prime.

Together with 3878197457, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3878197397 and 3878197406.

It is not a weakly prime, because it can be changed into another prime (3878197451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939098729 + 1939098730.

It is an arithmetic number, because the mean of its divisors is an integer number (1939098730).

Almost surely, 2^3878197459 is an apocalyptic number.

3878197459 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878197459 is an equidigital number, since it uses as much as digits as its factorization.

3878197459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 61.

The square root of 3878197459 is about 62275.1753028444. The cubic root of 3878197459 is about 1571.1222261691.

The spelling of 3878197459 in words is "three billion, eight hundred seventy-eight million, one hundred ninety-seven thousand, four hundred fifty-nine".