381350587 has 2 divisors, whose sum is σ = 381350588. Its totient is φ = 381350586.

The previous prime is 381350573. The next prime is 381350611. The reversal of 381350587 is 785053183.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381350587 is a prime.

It is not a weakly prime, because it can be changed into another prime (381350507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190675293 + 190675294.

It is an arithmetic number, because the mean of its divisors is an integer number (190675294).

Almost surely, 2^381350587 is an apocalyptic number.

381350587 is a deficient number, since it is larger than the sum of its proper divisors (1).

381350587 is an equidigital number, since it uses as much as digits as its factorization.

381350587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 381350587 is about 19528.1997890231. The cubic root of 381350587 is about 725.1727448854.

The spelling of 381350587 in words is "three hundred eighty-one million, three hundred fifty thousand, five hundred eighty-seven".