145086191 has 2 divisors, whose sum is σ = 145086192. Its totient is φ = 145086190.

The previous prime is 145086187. The next prime is 145086233. The reversal of 145086191 is 191680541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145086191 - 2² = 145086187 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 (145086131) 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, 72543095 + 72543096.

It is an arithmetic number, because the mean of its divisors is an integer number (72543096).

Almost surely, 2^145086191 is an apocalyptic number.

145086191 is a deficient number, since it is larger than the sum of its proper divisors (1).

145086191 is an equidigital number, since it uses as much as digits as its factorization.

145086191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 145086191 is about 12045.1729335863. The cubic root of 145086191 is about 525.4628613416.

The spelling of 145086191 in words is "one hundred forty-five million, eighty-six thousand, one hundred ninety-one".