38161810 has 16 divisors (see below), whose sum is σ = 68775552. Its totient is φ = 15246000.

The previous prime is 38161801. The next prime is 38161817. The reversal of 38161810 is 1816183.

It is a happy number.

It is a super-2 number, since 2×38161810² = 2912647484952200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (38161817) 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, 8695 + ... + 12325.

It is an arithmetic number, because the mean of its divisors is an integer number (4298472).

Almost surely, 2^38161810 is an apocalyptic number.

38161810 is a deficient number, since it is larger than the sum of its proper divisors (30613742).

38161810 is a wasteful number, since it uses less digits than its factorization.

38161810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 38161810 is about 6177.5245851393. The cubic root of 38161810 is about 336.6740590258.

Adding to 38161810 its reverse (1816183), we get a palindrome (39977993).

The spelling of 38161810 in words is "thirty-eight million, one hundred sixty-one thousand, eight hundred ten".