145118549 has 2 divisors, whose sum is σ = 145118550. Its totient is φ = 145118548.

The previous prime is 145118543. The next prime is 145118587. The reversal of 145118549 is 945811541.

It is a happy number.

It is an a-pointer prime, because the next prime (145118587) can be obtained adding 145118549 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109202500 + 35916049 = 10450^2 + 5993^2 .

It is a cyclic number.

It is not a de Polignac number, because 145118549 - 2²⁰ = 144069973 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 (145118543) 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, 72559274 + 72559275.

It is an arithmetic number, because the mean of its divisors is an integer number (72559275).

Almost surely, 2^145118549 is an apocalyptic number.

It is an amenable number.

145118549 is a deficient number, since it is larger than the sum of its proper divisors (1).

145118549 is an equidigital number, since it uses as much as digits as its factorization.

145118549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 38.

The square root of 145118549 is about 12046.5160523697. The cubic root of 145118549 is about 525.5019224066.

The spelling of 145118549 in words is "one hundred forty-five million, one hundred eighteen thousand, five hundred forty-nine".