38494109 has 2 divisors, whose sum is σ = 38494110. Its totient is φ = 38494108.

The previous prime is 38494091. The next prime is 38494139. The reversal of 38494109 is 90149483.

Together with previous prime (38494091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38477209 + 16900 = 6203^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 38494109 - 2¹⁶ = 38428573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38494139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19247054 + 19247055.

It is an arithmetic number, because the mean of its divisors is an integer number (19247055).

Almost surely, 2^38494109 is an apocalyptic number.

It is an amenable number.

38494109 is a deficient number, since it is larger than the sum of its proper divisors (1).

38494109 is an equidigital number, since it uses as much as digits as its factorization.

38494109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 38494109 is about 6204.3620945267. The cubic root of 38494109 is about 337.6484475452.

The spelling of 38494109 in words is "thirty-eight million, four hundred ninety-four thousand, one hundred nine".