38861811 has 6 divisors (see below), whose sum is σ = 56133740. Its totient is φ = 25907868.

The previous prime is 38861807. The next prime is 38861833. The reversal of 38861811 is 11816883.

38861811 is a `hidden beast` number, since 38 + 8 + 618 + 1 + 1 = 666.

It is not a de Polignac number, because 38861811 - 2² = 38861807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38861611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2158981 + ... + 2158998.

Almost surely, 2^38861811 is an apocalyptic number.

38861811 is a deficient number, since it is larger than the sum of its proper divisors (17271929).

38861811 is a wasteful number, since it uses less digits than its factorization.

38861811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317985 (or 4317982 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 38861811 is about 6233.9242055065. The cubic root of 38861811 is about 338.7201334398.

The spelling of 38861811 in words is "thirty-eight million, eight hundred sixty-one thousand, eight hundred eleven".