38225191 has 2 divisors, whose sum is σ = 38225192. Its totient is φ = 38225190.

The previous prime is 38225189. The next prime is 38225221. The reversal of 38225191 is 19152283.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38225191 - 2¹ = 38225189 is a prime.

It is a super-2 number, since 2×38225191² = 2922330453972962, which contains 22 as substring.

Together with 38225189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38225111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19112595 + 19112596.

It is an arithmetic number, because the mean of its divisors is an integer number (19112596).

Almost surely, 2^38225191 is an apocalyptic number.

38225191 is a deficient number, since it is larger than the sum of its proper divisors (1).

38225191 is an equidigital number, since it uses as much as digits as its factorization.

38225191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 38225191 is about 6182.6524243240. The cubic root of 38225191 is about 336.8603441797.

It can be divided in two parts, 38225 and 191, that added together give a 4-th power (38416 = 14⁴).

The spelling of 38225191 in words is "thirty-eight million, two hundred twenty-five thousand, one hundred ninety-one".