38139170 has 16 divisors (see below), whose sum is σ = 69423480. Its totient is φ = 15083904.

The previous prime is 38139163. The next prime is 38139173. The reversal of 38139170 is 7193183.

It can be written as a sum of positive squares in 4 ways, for example, as 35868121 + 2271049 = 5989^2 + 1507^2 .

It is not an unprimeable number, because it can be changed into a prime (38139173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20537 + ... + 22316.

Almost surely, 2^38139170 is an apocalyptic number.

38139170 is a deficient number, since it is larger than the sum of its proper divisors (31284310).

38139170 is a wasteful number, since it uses less digits than its factorization.

38139170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42949.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 38139170 is about 6175.6918640748. The cubic root of 38139170 is about 336.6074670714.

The spelling of 38139170 in words is "thirty-eight million, one hundred thirty-nine thousand, one hundred seventy".