139081511 has 2 divisors, whose sum is σ = 139081512. Its totient is φ = 139081510.

The previous prime is 139081499. The next prime is 139081559. The reversal of 139081511 is 115180931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139081511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139081561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69540755 + 69540756.

It is an arithmetic number, because the mean of its divisors is an integer number (69540756).

Almost surely, 2^139081511 is an apocalyptic number.

139081511 is a deficient number, since it is larger than the sum of its proper divisors (1).

139081511 is an equidigital number, since it uses as much as digits as its factorization.

139081511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 139081511 is about 11793.2824523116. The cubic root of 139081511 is about 518.1113824079. Note that the first 3 decimals are identical.

The spelling of 139081511 in words is "one hundred thirty-nine million, eighty-one thousand, five hundred eleven".