145819519 has 2 divisors, whose sum is σ = 145819520. Its totient is φ = 145819518.

The previous prime is 145819507. The next prime is 145819549. The reversal of 145819519 is 915918541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145819519 - 2⁷ = 145819391 is a prime.

It is a super-2 number, since 2×145819519² = 42526664242782722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145819549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72909759 + 72909760.

It is an arithmetic number, because the mean of its divisors is an integer number (72909760).

Almost surely, 2^145819519 is an apocalyptic number.

145819519 is a deficient number, since it is larger than the sum of its proper divisors (1).

145819519 is an equidigital number, since it uses as much as digits as its factorization.

145819519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 43.

The square root of 145819519 is about 12075.5753072059. The cubic root of 145819519 is about 526.3466790328.

The spelling of 145819519 in words is "one hundred forty-five million, eight hundred nineteen thousand, five hundred nineteen".