381108851 has 2 divisors, whose sum is σ = 381108852. Its totient is φ = 381108850.

The previous prime is 381108841. The next prime is 381108883. The reversal of 381108851 is 158801183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381108851 - 2⁶ = 381108787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381108841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190554425 + 190554426.

It is an arithmetic number, because the mean of its divisors is an integer number (190554426).

Almost surely, 2^381108851 is an apocalyptic number.

381108851 is a deficient number, since it is larger than the sum of its proper divisors (1).

381108851 is an equidigital number, since it uses as much as digits as its factorization.

381108851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 35.

The square root of 381108851 is about 19522.0093996494. The cubic root of 381108851 is about 725.0194848509.

The spelling of 381108851 in words is "three hundred eighty-one million, one hundred eight thousand, eight hundred fifty-one".