38191121 has 8 divisors (see below), whose sum is σ = 40318080. Its totient is φ = 36075888.

The previous prime is 38191117. The next prime is 38191147. The reversal of 38191121 is 12119183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38191121 - 2² = 38191117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38191171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4235 + ... + 9711.

It is an arithmetic number, because the mean of its divisors is an integer number (5039760).

Almost surely, 2^38191121 is an apocalyptic number.

It is an amenable number.

38191121 is a deficient number, since it is larger than the sum of its proper divisors (2126959).

38191121 is a wasteful number, since it uses less digits than its factorization.

38191121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863.

The product of its digits is 432, while the sum is 26.

The square root of 38191121 is about 6179.8965201692. The cubic root of 38191121 is about 336.7602335540.

The spelling of 38191121 in words is "thirty-eight million, one hundred ninety-one thousand, one hundred twenty-one".