38381668 has 12 divisors (see below), whose sum is σ = 72334780. Its totient is φ = 17714592.

The previous prime is 38381659. The next prime is 38381669. The reversal of 38381668 is 86618383.

It can be written as a sum of positive squares in 2 ways, for example, as 6594624 + 31787044 = 2568^2 + 5638^2 .

It is not an unprimeable number, because it can be changed into a prime (38381669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369003 + ... + 369106.

Almost surely, 2^38381668 is an apocalyptic number.

It is an amenable number.

38381668 is a deficient number, since it is larger than the sum of its proper divisors (33953112).

38381668 is a wasteful number, since it uses less digits than its factorization.

38381668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738126 (or 738124 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 38381668 is about 6195.2940204642. The cubic root of 38381668 is about 337.3193707431.

The spelling of 38381668 in words is "thirty-eight million, three hundred eighty-one thousand, six hundred sixty-eight".