3908381378233 has 2 divisors, whose sum is σ = 3908381378234. Its totient is φ = 3908381378232.

The previous prime is 3908381378221. The next prime is 3908381378333. The reversal of 3908381378233 is 3328731838093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2654579386944 + 1253801991289 = 1629288^2 + 1119733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3908381378233 is a prime.

It is not a weakly prime, because it can be changed into another prime (3908381378333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954190689116 + 1954190689117.

It is an arithmetic number, because the mean of its divisors is an integer number (1954190689117).

Almost surely, 2^{3908381378233} is an apocalyptic number.

It is an amenable number.

3908381378233 is a deficient number, since it is larger than the sum of its proper divisors (1).

3908381378233 is an equidigital number, since it uses as much as digits as its factorization.

3908381378233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 3908381378233 in words is "three trillion, nine hundred eight billion, three hundred eighty-one million, three hundred seventy-eight thousand, two hundred thirty-three".