38031985 has 4 divisors (see below), whose sum is σ = 45638388. Its totient is φ = 30425584.

The previous prime is 38031937. The next prime is 38031991. The reversal of 38031985 is 58913083.

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 9345249 + 28686736 = 3057^2 + 5356^2 .

It is a cyclic number.

It is not a de Polignac number, because 38031985 - 2⁹ = 38031473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3803194 + ... + 3803203.

It is an arithmetic number, because the mean of its divisors is an integer number (11409597).

Almost surely, 2^38031985 is an apocalyptic number.

It is an amenable number.

38031985 is a deficient number, since it is larger than the sum of its proper divisors (7606403).

38031985 is an equidigital number, since it uses as much as digits as its factorization.

38031985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606402.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 38031985 is about 6167.0077833581. The cubic root of 38031985 is about 336.2918412299.

The spelling of 38031985 in words is "thirty-eight million, thirty-one thousand, nine hundred eighty-five".