38191369 has 4 divisors (see below), whose sum is σ = 38236996. Its totient is φ = 38145744.

The previous prime is 38191357. The next prime is 38191379. The reversal of 38191369 is 96319183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 25857225 = 3512^2 + 5085^2 .

It is a cyclic number.

It is not a de Polignac number, because 38191369 - 2¹¹ = 38189321 is a prime.

It is a super-2 number, since 2×38191369² = 2917161332188322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38191379) 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, 21534 + ... + 23239.

It is an arithmetic number, because the mean of its divisors is an integer number (9559249).

Almost surely, 2^38191369 is an apocalyptic number.

It is an amenable number.

38191369 is a deficient number, since it is larger than the sum of its proper divisors (45627).

38191369 is an equidigital number, since it uses as much as digits as its factorization.

38191369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45626.

The product of its digits is 34992, while the sum is 40.

The square root of 38191369 is about 6179.9165851976. The cubic root of 38191369 is about 336.7609624874.

The spelling of 38191369 in words is "thirty-eight million, one hundred ninety-one thousand, three hundred sixty-nine".