145739219 has 2 divisors, whose sum is σ = 145739220. Its totient is φ = 145739218.

The previous prime is 145739173. The next prime is 145739233. The reversal of 145739219 is 912937541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145739219 is a prime.

It is a super-2 number, since 2×145739219² = 42479839909459922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145730219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72869609 + 72869610.

It is an arithmetic number, because the mean of its divisors is an integer number (72869610).

Almost surely, 2^145739219 is an apocalyptic number.

145739219 is a deficient number, since it is larger than the sum of its proper divisors (1).

145739219 is an equidigital number, since it uses as much as digits as its factorization.

145739219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 145739219 is about 12072.2499559941. The cubic root of 145739219 is about 526.2500449670.

The spelling of 145739219 in words is "one hundred forty-five million, seven hundred thirty-nine thousand, two hundred nineteen".