381667268 has 6 divisors (see below), whose sum is σ = 667917726. Its totient is φ = 190833632.

The previous prime is 381667261. The next prime is 381667327. The reversal of 381667268 is 862766183.

It can be written as a sum of positive squares in only one way, i.e., 236175424 + 145491844 = 15368^2 + 12062^2 .

It is not an unprimeable number, because it can be changed into a prime (381667261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47708405 + ... + 47708412.

It is an arithmetic number, because the mean of its divisors is an integer number (111319621).

Almost surely, 2^381667268 is an apocalyptic number.

It is an amenable number.

381667268 is a deficient number, since it is larger than the sum of its proper divisors (286250458).

381667268 is a wasteful number, since it uses less digits than its factorization.

381667268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95416821 (or 95416819 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 381667268 is about 19536.3064062785. The cubic root of 381667268 is about 725.3734218993.

The spelling of 381667268 in words is "three hundred eighty-one million, six hundred sixty-seven thousand, two hundred sixty-eight".