138263195 has 16 divisors (see below), whose sum is σ = 189812928. Its totient is φ = 94711680.

The previous prime is 138263179. The next prime is 138263197. The reversal of 138263195 is 591362831.

It is a happy number.

It is not a de Polignac number, because 138263195 - 2⁴ = 138263179 is a prime.

It is a super-2 number, since 2×138263195² = 38233422183216050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138263197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55517 + ... + 57953.

It is an arithmetic number, because the mean of its divisors is an integer number (11863308).

Almost surely, 2^138263195 is an apocalyptic number.

138263195 is a deficient number, since it is larger than the sum of its proper divisors (51549733).

138263195 is a wasteful number, since it uses less digits than its factorization.

138263195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070.

The product of its digits is 38880, while the sum is 38.

The square root of 138263195 is about 11758.5371113927. The cubic root of 138263195 is about 517.0932430370.

The spelling of 138263195 in words is "one hundred thirty-eight million, two hundred sixty-three thousand, one hundred ninety-five".