38219945 has 8 divisors (see below), whose sum is σ = 45898944. Its totient is φ = 30552624.

The previous prime is 38219917. The next prime is 38219947. The reversal of 38219945 is 54991283.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38219945 - 2²⁰ = 37171369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38219947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8012 + ... + 11858.

It is an arithmetic number, because the mean of its divisors is an integer number (5737368).

Almost surely, 2^38219945 is an apocalyptic number.

It is an amenable number.

38219945 is a deficient number, since it is larger than the sum of its proper divisors (7678999).

38219945 is a wasteful number, since it uses less digits than its factorization.

38219945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5839.

The product of its digits is 77760, while the sum is 41.

The square root of 38219945 is about 6182.2281581967. The cubic root of 38219945 is about 336.8449333109.

The spelling of 38219945 in words is "thirty-eight million, two hundred nineteen thousand, nine hundred forty-five".