38168866 has 4 divisors (see below), whose sum is σ = 57253302. Its totient is φ = 19084432.

The previous prime is 38168863. The next prime is 38168873. The reversal of 38168866 is 66886183.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 23184225 + 14984641 = 4815^2 + 3871^2 .

It is not an unprimeable number, because it can be changed into a prime (38168861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9542215 + ... + 9542218.

Almost surely, 2^38168866 is an apocalyptic number.

38168866 is a deficient number, since it is larger than the sum of its proper divisors (19084436).

38168866 is a wasteful number, since it uses less digits than its factorization.

38168866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19084435.

The product of its digits is 331776, while the sum is 46.

The square root of 38168866 is about 6178.0956612859. The cubic root of 38168866 is about 336.6948077426.

The spelling of 38168866 in words is "thirty-eight million, one hundred sixty-eight thousand, eight hundred sixty-six".