30138195 has 16 divisors (see below), whose sum is σ = 51058080. Its totient is φ = 15128064.

The previous prime is 30138193. The next prime is 30138197. The reversal of 30138195 is 59183103.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30138193) and next prime (30138197).

It is not a de Polignac number, because 30138195 - 2¹ = 30138193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30138193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58840 + ... + 59349.

It is an arithmetic number, because the mean of its divisors is an integer number (3191130).

Almost surely, 2^30138195 is an apocalyptic number.

30138195 is a deficient number, since it is larger than the sum of its proper divisors (20919885).

30138195 is a wasteful number, since it uses less digits than its factorization.

30138195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118214.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 30138195 is about 5489.8264999907. The cubic root of 30138195 is about 311.1996354049.

It can be divided in two parts, 301381 and 95, that added together give a triangular number (301476 = T₇₇₆).

The spelling of 30138195 in words is "thirty million, one hundred thirty-eight thousand, one hundred ninety-five".