381018463 has 16 divisors (see below), whose sum is σ = 450452800. Its totient is φ = 322092288.

The previous prime is 381018413. The next prime is 381018493. The reversal of 381018463 is 364810183.

It is not a de Polignac number, because 381018463 - 2¹⁷ = 380887391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381018413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17431 + ... + 32647.

It is an arithmetic number, because the mean of its divisors is an integer number (28153300).

Almost surely, 2^381018463 is an apocalyptic number.

381018463 is a deficient number, since it is larger than the sum of its proper divisors (69434337).

381018463 is an equidigital number, since it uses as much as digits as its factorization.

381018463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15311 (or 15297 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 381018463 is about 19519.6942342855. The cubic root of 381018463 is about 724.9621624328.

It can be divided in two parts, 38101 and 8463, that added together give a palindrome (46564).

The spelling of 381018463 in words is "three hundred eighty-one million, eighteen thousand, four hundred sixty-three".