38116642 has 4 divisors (see below), whose sum is σ = 57174966. Its totient is φ = 19058320.

The previous prime is 38116613. The next prime is 38116649. The reversal of 38116642 is 24661183.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 20802721 + 17313921 = 4561^2 + 4161^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38116649) 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 as a sum of consecutive naturals, namely, 9529159 + ... + 9529162.

Almost surely, 2^38116642 is an apocalyptic number.

38116642 is a deficient number, since it is larger than the sum of its proper divisors (19058324).

38116642 is a wasteful number, since it uses less digits than its factorization.

38116642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19058323.

The product of its digits is 6912, while the sum is 31.

The square root of 38116642 is about 6173.8676694597. The cubic root of 38116642 is about 336.5411783838.

The spelling of 38116642 in words is "thirty-eight million, one hundred sixteen thousand, six hundred forty-two".