145145419 has 2 divisors, whose sum is σ = 145145420. Its totient is φ = 145145418.

The previous prime is 145145359. The next prime is 145145471. The reversal of 145145419 is 914541541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145145419 - 2⁹ = 145144907 is a prime.

It is a super-2 number, since 2×145145419² = 42134385313371122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145145489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72572709 + 72572710.

It is an arithmetic number, because the mean of its divisors is an integer number (72572710).

Almost surely, 2^145145419 is an apocalyptic number.

145145419 is a deficient number, since it is larger than the sum of its proper divisors (1).

145145419 is an equidigital number, since it uses as much as digits as its factorization.

145145419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 34.

The square root of 145145419 is about 12047.6312609575. The cubic root of 145145419 is about 525.5343542019.

The spelling of 145145419 in words is "one hundred forty-five million, one hundred forty-five thousand, four hundred nineteen".