145136219 has 4 divisors (see below), whose sum is σ = 145653000. Its totient is φ = 144619440.

The previous prime is 145136177. The next prime is 145136221. The reversal of 145136219 is 912631541.

145136219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912631541 = 19 ⋅48033239.

It is a cyclic number.

It is not a de Polignac number, because 145136219 - 2¹² = 145132123 is a prime.

It is a super-2 number, since 2×145136219² = 42129044131231922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145136119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257969 + ... + 258530.

It is an arithmetic number, because the mean of its divisors is an integer number (36413250).

Almost surely, 2^145136219 is an apocalyptic number.

145136219 is a deficient number, since it is larger than the sum of its proper divisors (516781).

145136219 is an equidigital number, since it uses as much as digits as its factorization.

145136219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516780.

The product of its digits is 6480, while the sum is 32.

The square root of 145136219 is about 12047.2494371122. The cubic root of 145136219 is about 525.5232503535.

The spelling of 145136219 in words is "one hundred forty-five million, one hundred thirty-six thousand, two hundred nineteen".