38197161 has 6 divisors (see below), whose sum is σ = 55173690. Its totient is φ = 25464768.

The previous prime is 38197157. The next prime is 38197171. The reversal of 38197161 is 16179183.

It can be written as a sum of positive squares in only one way, i.e., 38192400 + 4761 = 6180^2 + 69^2 .

It is not a de Polignac number, because 38197161 - 2² = 38197157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38197121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2122056 + ... + 2122073.

It is an arithmetic number, because the mean of its divisors is an integer number (9195615).

Almost surely, 2^38197161 is an apocalyptic number.

It is an amenable number.

38197161 is a deficient number, since it is larger than the sum of its proper divisors (16976529).

38197161 is a wasteful number, since it uses less digits than its factorization.

38197161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244135 (or 4244132 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 38197161 is about 6180.3851821711. The cubic root of 38197161 is about 336.7779857133. Note that the first 3 decimals are identical.

The spelling of 38197161 in words is "thirty-eight million, one hundred ninety-seven thousand, one hundred sixty-one".