38161811 has 4 divisors (see below), whose sum is σ = 38188392. Its totient is φ = 38135232.

The previous prime is 38161801. The next prime is 38161817. The reversal of 38161811 is 11816183.

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

It is a cyclic number.

It is not a de Polignac number, because 38161811 - 2¹⁴ = 38145427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38161817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11006 + ... + 14051.

It is an arithmetic number, because the mean of its divisors is an integer number (9547098).

Almost surely, 2^38161811 is an apocalyptic number.

38161811 is a deficient number, since it is larger than the sum of its proper divisors (26581).

38161811 is a wasteful number, since it uses less digits than its factorization.

38161811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26580.

The product of its digits is 1152, while the sum is 29.

The square root of 38161811 is about 6177.5246660778. The cubic root of 38161811 is about 336.6740619665.

Adding to 38161811 its reverse (11816183), we get a palindrome (49977994).

The spelling of 38161811 in words is "thirty-eight million, one hundred sixty-one thousand, eight hundred eleven".