145018901 has 2 divisors, whose sum is σ = 145018902. Its totient is φ = 145018900.

The previous prime is 145018883. The next prime is 145018943. The reversal of 145018901 is 109810541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135722500 + 9296401 = 11650^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 145018901 - 2¹⁰ = 145017877 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145018001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72509450 + 72509451.

It is an arithmetic number, because the mean of its divisors is an integer number (72509451).

Almost surely, 2^145018901 is an apocalyptic number.

It is an amenable number.

145018901 is a deficient number, since it is larger than the sum of its proper divisors (1).

145018901 is an equidigital number, since it uses as much as digits as its factorization.

145018901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 145018901 is about 12042.3793745256. The cubic root of 145018901 is about 525.3816133987.

The spelling of 145018901 in words is "one hundred forty-five million, eighteen thousand, nine hundred one".