145842897289 has 2 divisors, whose sum is σ = 145842897290. Its totient is φ = 145842897288.

The previous prime is 145842897281. The next prime is 145842897311. The reversal of 145842897289 is 982798248541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136678090000 + 9164807289 = 369700^2 + 95733^2 .

It is a cyclic number.

It is not a de Polignac number, because 145842897289 - 2³ = 145842897281 is a prime.

It is not a weakly prime, because it can be changed into another prime (145842897281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72921448644 + 72921448645.

It is an arithmetic number, because the mean of its divisors is an integer number (72921448645).

Almost surely, 2^145842897289 is an apocalyptic number.

It is an amenable number.

145842897289 is a deficient number, since it is larger than the sum of its proper divisors (1).

145842897289 is an equidigital number, since it uses as much as digits as its factorization.

145842897289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92897280, while the sum is 67.

The spelling of 145842897289 in words is "one hundred forty-five billion, eight hundred forty-two million, eight hundred ninety-seven thousand, two hundred eighty-nine".