38634019 has 2 divisors, whose sum is σ = 38634020. Its totient is φ = 38634018.

The previous prime is 38634007. The next prime is 38634041. The reversal of 38634019 is 91043683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38634019 - 2⁷ = 38633891 is a prime.

It is a super-2 number, since 2×38634019² = 2985174848184722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38635019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19317009 + 19317010.

It is an arithmetic number, because the mean of its divisors is an integer number (19317010).

Almost surely, 2^38634019 is an apocalyptic number.

38634019 is a deficient number, since it is larger than the sum of its proper divisors (1).

38634019 is an equidigital number, since it uses as much as digits as its factorization.

38634019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 38634019 is about 6215.6269997483. The cubic root of 38634019 is about 338.0570232795.

The spelling of 38634019 in words is "thirty-eight million, six hundred thirty-four thousand, nineteen".