145456319 has 2 divisors, whose sum is σ = 145456320. Its totient is φ = 145456318.

The previous prime is 145456303. The next prime is 145456331. The reversal of 145456319 is 913654541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145456319 - 2⁴ = 145456303 is a prime.

It is a super-2 number, since 2×145456319² = 42315081474059522, which contains 22 as substring.

It is a Sophie Germain 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 (145456019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72728159 + 72728160.

It is an arithmetic number, because the mean of its divisors is an integer number (72728160).

Almost surely, 2^145456319 is an apocalyptic number.

145456319 is a deficient number, since it is larger than the sum of its proper divisors (1).

145456319 is an equidigital number, since it uses as much as digits as its factorization.

145456319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 145456319 is about 12060.5273101967. The cubic root of 145456319 is about 525.9093163412.

It can be divided in two parts, 145456 and 319, that multiplied together give a palindrome (46400464).

The spelling of 145456319 in words is "one hundred forty-five million, four hundred fifty-six thousand, three hundred nineteen".