139194163 has 2 divisors, whose sum is σ = 139194164. Its totient is φ = 139194162.

The previous prime is 139194149. The next prime is 139194197. The reversal of 139194163 is 361491931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139194163 is a prime.

It is not a weakly prime, because it can be changed into another prime (139194103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69597081 + 69597082.

It is an arithmetic number, because the mean of its divisors is an integer number (69597082).

Almost surely, 2^139194163 is an apocalyptic number.

139194163 is a deficient number, since it is larger than the sum of its proper divisors (1).

139194163 is an equidigital number, since it uses as much as digits as its factorization.

139194163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 139194163 is about 11798.0575943670. The cubic root of 139194163 is about 518.2512297338.

It can be divided in two parts, 139194 and 163, that multiplied together give a palindrome (22688622).

The spelling of 139194163 in words is "one hundred thirty-nine million, one hundred ninety-four thousand, one hundred sixty-three".