38385811 has 4 divisors (see below), whose sum is σ = 38411032. Its totient is φ = 38360592.

The previous prime is 38385773. The next prime is 38385839. The reversal of 38385811 is 11858383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11858383 = 631 ⋅18793.

It is a cyclic number.

It is not a de Polignac number, because 38385811 - 2¹⁷ = 38254739 is a prime.

It is a super-2 number, since 2×38385811² = 2946940972255442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38382811) 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, 10170 + ... + 13423.

It is an arithmetic number, because the mean of its divisors is an integer number (9602758).

Almost surely, 2^38385811 is an apocalyptic number.

38385811 is a deficient number, since it is larger than the sum of its proper divisors (25221).

38385811 is a wasteful number, since it uses less digits than its factorization.

38385811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25220.

The product of its digits is 23040, while the sum is 37.

The square root of 38385811 is about 6195.6283781389. The cubic root of 38385811 is about 337.3315072999.

The spelling of 38385811 in words is "thirty-eight million, three hundred eighty-five thousand, eight hundred eleven".