381888707 has 2 divisors, whose sum is σ = 381888708. Its totient is φ = 381888706.

The previous prime is 381888701. The next prime is 381888743. The reversal of 381888707 is 707888183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381888707 - 2²² = 377694403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381888701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190944353 + 190944354.

It is an arithmetic number, because the mean of its divisors is an integer number (190944354).

Almost surely, 2^381888707 is an apocalyptic number.

381888707 is a deficient number, since it is larger than the sum of its proper divisors (1).

381888707 is an equidigital number, since it uses as much as digits as its factorization.

381888707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 602112, while the sum is 50.

The square root of 381888707 is about 19541.9729556665. The cubic root of 381888707 is about 725.5136792422.

The spelling of 381888707 in words is "three hundred eighty-one million, eight hundred eighty-eight thousand, seven hundred seven".