38520019 has 4 divisors (see below), whose sum is σ = 38556544. Its totient is φ = 38483496.

The previous prime is 38519981. The next prime is 38520037. The reversal of 38520019 is 91002583.

38520019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38520019 - 2⁷ = 38519891 is a prime.

It is a super-2 number, since 2×38520019² = 2967583727520722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38520059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16632 + ... + 18805.

It is an arithmetic number, because the mean of its divisors is an integer number (9639136).

Almost surely, 2^38520019 is an apocalyptic number.

38520019 is a deficient number, since it is larger than the sum of its proper divisors (36525).

38520019 is a wasteful number, since it uses less digits than its factorization.

38520019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36524.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 38520019 is about 6206.4497903391. The cubic root of 38520019 is about 337.7241864864.

The spelling of 38520019 in words is "thirty-eight million, five hundred twenty thousand, nineteen".