139198151 has 2 divisors, whose sum is σ = 139198152. Its totient is φ = 139198150.

The previous prime is 139198121. The next prime is 139198183. The reversal of 139198151 is 151891931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139198151 is a prime.

It is a super-2 number, since 2×139198151² = 38752250483637602, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139198121) 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 as a sum of consecutive naturals, namely, 69599075 + 69599076.

It is an arithmetic number, because the mean of its divisors is an integer number (69599076).

Almost surely, 2^139198151 is an apocalyptic number.

139198151 is a deficient number, since it is larger than the sum of its proper divisors (1).

139198151 is an equidigital number, since it uses as much as digits as its factorization.

139198151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 38.

The square root of 139198151 is about 11798.2266040283. The cubic root of 139198151 is about 518.2561790941.

The spelling of 139198151 in words is "one hundred thirty-nine million, one hundred ninety-eight thousand, one hundred fifty-one".