381016013 has 12 divisors (see below), whose sum is σ = 443541852. Its totient is φ = 326350080.

The previous prime is 381016003. The next prime is 381016037. The reversal of 381016013 is 310610183.

It can be written as a sum of positive squares in 2 ways, for example, as 293162884 + 87853129 = 17122^2 + 9373^2 .

It is not a de Polignac number, because 381016013 - 2⁴ = 381015997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381016013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381016003) 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 11 ways as a sum of consecutive naturals, for example, 123773 + ... + 126813.

It is an arithmetic number, because the mean of its divisors is an integer number (36961821).

Almost surely, 2^381016013 is an apocalyptic number.

It is an amenable number.

381016013 is a deficient number, since it is larger than the sum of its proper divisors (62525839).

381016013 is a wasteful number, since it uses less digits than its factorization.

381016013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612 (or 5605 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 381016013 is about 19519.6314770541. The cubic root of 381016013 is about 724.9606085613.

Adding to 381016013 its reverse (310610183), we get a palindrome (691626196).

The spelling of 381016013 in words is "three hundred eighty-one million, sixteen thousand, thirteen".