78144119 has 2 divisors, whose sum is σ = 78144120. Its totient is φ = 78144118.

The previous prime is 78144113. The next prime is 78144139. The reversal of 78144119 is 91144187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78144119 - 2⁴ = 78144103 is a prime.

It is a super-2 number, since 2×78144119² = 12213006668572322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78144113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39072059 + 39072060.

It is an arithmetic number, because the mean of its divisors is an integer number (39072060).

Almost surely, 2^78144119 is an apocalyptic number.

78144119 is a deficient number, since it is larger than the sum of its proper divisors (1).

78144119 is an equidigital number, since it uses as much as digits as its factorization.

78144119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The square root of 78144119 is about 8839.9162326348. The cubic root of 78144119 is about 427.5288563903.

The spelling of 78144119 in words is "seventy-eight million, one hundred forty-four thousand, one hundred nineteen".