381270667 has 4 divisors (see below), whose sum is σ = 383186800. Its totient is φ = 379354536.

The previous prime is 381270649. The next prime is 381270691. The reversal of 381270667 is 766072183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766072183 = 181 ⋅4232443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381270667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381270697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957768 + ... + 958165.

It is an arithmetic number, because the mean of its divisors is an integer number (95796700).

Almost surely, 2^381270667 is an apocalyptic number.

381270667 is a deficient number, since it is larger than the sum of its proper divisors (1916133).

381270667 is a wasteful number, since it uses less digits than its factorization.

381270667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916132.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 381270667 is about 19526.1534102342. The cubic root of 381270667 is about 725.1220829688.

The spelling of 381270667 in words is "three hundred eighty-one million, two hundred seventy thousand, six hundred sixty-seven".