38389145 has 8 divisors (see below), whose sum is σ = 48776904. Its totient is φ = 28904704.

The previous prime is 38389133. The next prime is 38389147. The reversal of 38389145 is 54198383.

It can be written as a sum of positive squares in 4 ways, for example, as 4528384 + 33860761 = 2128^2 + 5819^2 .

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 38389145 - 2⁶ = 38389081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38389147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225734 + ... + 225903.

It is an arithmetic number, because the mean of its divisors is an integer number (6097113).

Almost surely, 2^38389145 is an apocalyptic number.

It is an amenable number.

38389145 is a deficient number, since it is larger than the sum of its proper divisors (10387759).

38389145 is a wasteful number, since it uses less digits than its factorization.

38389145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451659.

The product of its digits is 103680, while the sum is 41.

The square root of 38389145 is about 6195.8974329793. The cubic root of 38389145 is about 337.3412733276.

The spelling of 38389145 in words is "thirty-eight million, three hundred eighty-nine thousand, one hundred forty-five".