145786369 has 2 divisors, whose sum is σ = 145786370. Its totient is φ = 145786368.

The previous prime is 145786367. The next prime is 145786379. The reversal of 145786369 is 963687541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145515969 + 270400 = 12063^2 + 520^2 .

It is an emirp because it is prime and its reverse (963687541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145786369 - 2¹ = 145786367 is a prime.

It is a super-2 number, since 2×145786369² = 42507330772408322, which contains 22 as substring.

Together with 145786367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145786367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72893184 + 72893185.

It is an arithmetic number, because the mean of its divisors is an integer number (72893185).

Almost surely, 2^145786369 is an apocalyptic number.

It is an amenable number.

145786369 is a deficient number, since it is larger than the sum of its proper divisors (1).

145786369 is an equidigital number, since it uses as much as digits as its factorization.

145786369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 145786369 is about 12074.2026237760. The cubic root of 145786369 is about 526.3067901919.

The spelling of 145786369 in words is "one hundred forty-five million, seven hundred eighty-six thousand, three hundred sixty-nine".