38128903 has 2 divisors, whose sum is σ = 38128904. Its totient is φ = 38128902.

The previous prime is 38128901. The next prime is 38128913. The reversal of 38128903 is 30982183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38128903 - 2¹ = 38128901 is a prime.

Together with 38128901, it forms a pair of twin primes.

It is equal to p_2326399 and since 38128903 and 2326399 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38128901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064451 + 19064452.

It is an arithmetic number, because the mean of its divisors is an integer number (19064452).

Almost surely, 2^38128903 is an apocalyptic number.

38128903 is a deficient number, since it is larger than the sum of its proper divisors (1).

38128903 is an equidigital number, since it uses as much as digits as its factorization.

38128903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 38128903 is about 6174.8605652274. The cubic root of 38128903 is about 336.5772596405.

The spelling of 38128903 in words is "thirty-eight million, one hundred twenty-eight thousand, nine hundred three".