38189812 has 12 divisors (see below), whose sum is σ = 67003300. Its totient is φ = 19046016.

The previous prime is 38189807. The next prime is 38189813. The reversal of 38189812 is 21898183.

It can be written as a sum of positive squares in 2 ways, for example, as 22221796 + 15968016 = 4714^2 + 3996^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38189813) 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, 10437 + ... + 13612.

Almost surely, 2^38189812 is an apocalyptic number.

It is an amenable number.

38189812 is a deficient number, since it is larger than the sum of its proper divisors (28813488).

38189812 is a wasteful number, since it uses less digits than its factorization.

38189812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24450 (or 24448 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 38189812 is about 6179.7906113395. The cubic root of 38189812 is about 336.7563860263.

The spelling of 38189812 in words is "thirty-eight million, one hundred eighty-nine thousand, eight hundred twelve".