145363489 has 2 divisors, whose sum is σ = 145363490. Its totient is φ = 145363488.

The previous prime is 145363469. The next prime is 145363499. The reversal of 145363489 is 984363541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101909025 + 43454464 = 10095^2 + 6592^2 .

It is a cyclic number.

It is not a de Polignac number, because 145363489 - 2²³ = 136974881 is a prime.

It is a super-2 number, since 2×145363489² = 42261087868506242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145363469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72681744 + 72681745.

It is an arithmetic number, because the mean of its divisors is an integer number (72681745).

Almost surely, 2^145363489 is an apocalyptic number.

It is an amenable number.

145363489 is a deficient number, since it is larger than the sum of its proper divisors (1).

145363489 is an equidigital number, since it uses as much as digits as its factorization.

145363489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 145363489 is about 12056.6781909446. The cubic root of 145363489 is about 525.7974143592.

The spelling of 145363489 in words is "one hundred forty-five million, three hundred sixty-three thousand, four hundred eighty-nine".