144293819 has 2 divisors, whose sum is σ = 144293820. Its totient is φ = 144293818.

The previous prime is 144293791. The next prime is 144293839. The reversal of 144293819 is 918392441.

It is a strong prime.

It is an emirp because it is prime and its reverse (918392441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144293819 - 2⁸ = 144293563 is a prime.

It is a super-2 number, since 2×144293819² = 41641412403209522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (144293839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72146909 + 72146910.

It is an arithmetic number, because the mean of its divisors is an integer number (72146910).

Almost surely, 2^144293819 is an apocalyptic number.

144293819 is a deficient number, since it is larger than the sum of its proper divisors (1).

144293819 is an equidigital number, since it uses as much as digits as its factorization.

144293819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 144293819 is about 12012.2362197886. The cubic root of 144293819 is about 524.5045290674.

The spelling of 144293819 in words is "one hundred forty-four million, two hundred ninety-three thousand, eight hundred nineteen".