38384891 has 2 divisors, whose sum is σ = 38384892. Its totient is φ = 38384890.

The previous prime is 38384887. The next prime is 38384917. The reversal of 38384891 is 19848383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38384891 - 2² = 38384887 is a prime.

It is not a weakly prime, because it can be changed into another prime (38384821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19192445 + 19192446.

It is an arithmetic number, because the mean of its divisors is an integer number (19192446).

Almost surely, 2^38384891 is an apocalyptic number.

38384891 is a deficient number, since it is larger than the sum of its proper divisors (1).

38384891 is an equidigital number, since it uses as much as digits as its factorization.

38384891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 38384891 is about 6195.5541317948. The cubic root of 38384891 is about 337.3288123156.

The spelling of 38384891 in words is "thirty-eight million, three hundred eighty-four thousand, eight hundred ninety-one".