38196945 has 24 divisors (see below), whose sum is σ = 66456936. Its totient is φ = 20295168.

The previous prime is 38196923. The next prime is 38196959. The reversal of 38196945 is 54969183.

It is a happy number.

38196945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5157441 + 33039504 = 2271^2 + 5748^2 .

It is not a de Polignac number, because 38196945 - 2¹⁶ = 38131409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 38196945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11737 + ... + 14633.

It is an arithmetic number, because the mean of its divisors is an integer number (2769039).

It is a vampire number, since it can be written as 4395 ⋅ 8691 (with its own digits).

Almost surely, 2^38196945 is an apocalyptic number.

It is an amenable number.

38196945 is a deficient number, since it is larger than the sum of its proper divisors (28259991).

38196945 is a wasteful number, since it uses less digits than its factorization.

38196945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201 (or 3198 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 38196945 is about 6180.3677075074. The cubic root of 38196945 is about 336.7773509001. Note that the first 3 decimals are identical.

The spelling of 38196945 in words is "thirty-eight million, one hundred ninety-six thousand, nine hundred forty-five".