38042945 has 4 divisors (see below), whose sum is σ = 45651540. Its totient is φ = 30434352.

The previous prime is 38042929. The next prime is 38042951. The reversal of 38042945 is 54924083.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29931841 + 8111104 = 5471^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 38042945 - 2⁴ = 38042929 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3804290 + ... + 3804299.

It is an arithmetic number, because the mean of its divisors is an integer number (11412885).

Almost surely, 2^38042945 is an apocalyptic number.

It is an amenable number.

38042945 is a deficient number, since it is larger than the sum of its proper divisors (7608595).

38042945 is an equidigital number, since it uses as much as digits as its factorization.

38042945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7608594.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 38042945 is about 6167.8963188432. The cubic root of 38042945 is about 336.3241421523.

The spelling of 38042945 in words is "thirty-eight million, forty-two thousand, nine hundred forty-five".