38642219 has 32 divisors (see below), whose sum is σ = 51663360. Its totient is φ = 27993600.

The previous prime is 38642209. The next prime is 38642221. The reversal of 38642219 is 91224683.

It is a cyclic number.

It is not a de Polignac number, because 38642219 - 2¹⁶ = 38576683 is a prime.

It is a super-2 number, since 2×38642219² = 2986442178487922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38642209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89027 + ... + 89459.

It is an arithmetic number, because the mean of its divisors is an integer number (1614480).

Almost surely, 2^38642219 is an apocalyptic number.

38642219 is a deficient number, since it is larger than the sum of its proper divisors (13021141).

38642219 is a wasteful number, since it uses less digits than its factorization.

38642219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 20736, while the sum is 35.

The square root of 38642219 is about 6216.2865924923. The cubic root of 38642219 is about 338.0809389163.

The spelling of 38642219 in words is "thirty-eight million, six hundred forty-two thousand, two hundred nineteen".