38213109 has 12 divisors (see below), whose sum is σ = 60214752. Its totient is φ = 23159400.

The previous prime is 38213101. The next prime is 38213137. The reversal of 38213109 is 90131283.

It is not a de Polignac number, because 38213109 - 2³ = 38213101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38213101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192897 + ... + 193094.

It is an arithmetic number, because the mean of its divisors is an integer number (5017896).

Almost surely, 2^38213109 is an apocalyptic number.

It is an amenable number.

38213109 is a deficient number, since it is larger than the sum of its proper divisors (22001643).

38213109 is a wasteful number, since it uses less digits than its factorization.

38213109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386008 (or 386005 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 38213109 is about 6181.6752583745. The cubic root of 38213109 is about 336.8248494754.

The spelling of 38213109 in words is "thirty-eight million, two hundred thirteen thousand, one hundred nine".