381006463 has 4 divisors (see below), whose sum is σ = 381070800. Its totient is φ = 380942128.

The previous prime is 381006407. The next prime is 381006467. The reversal of 381006463 is 364600183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381006463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381006467) 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 in 3 ways as a sum of consecutive naturals, for example, 22270 + ... + 35467.

It is an arithmetic number, because the mean of its divisors is an integer number (95267700).

Almost surely, 2^381006463 is an apocalyptic number.

381006463 is a deficient number, since it is larger than the sum of its proper divisors (64337).

381006463 is an equidigital number, since it uses as much as digits as its factorization.

381006463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64336.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 381006463 is about 19519.3868500012. The cubic root of 381006463 is about 724.9545515704.

The spelling of 381006463 in words is "three hundred eighty-one million, six thousand, four hundred sixty-three".