144865807 has 2 divisors, whose sum is σ = 144865808. Its totient is φ = 144865806.

The previous prime is 144865781. The next prime is 144865811. The reversal of 144865807 is 708568441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144865807 - 2²³ = 136477199 is a prime.

It is a super-2 number, since 2×144865807² = 41972204075522498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144865837) 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, 72432903 + 72432904.

It is an arithmetic number, because the mean of its divisors is an integer number (72432904).

Almost surely, 2^144865807 is an apocalyptic number.

144865807 is a deficient number, since it is larger than the sum of its proper divisors (1).

144865807 is an equidigital number, since it uses as much as digits as its factorization.

144865807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 144865807 is about 12036.0212279640. The cubic root of 144865807 is about 525.1966694762.

The spelling of 144865807 in words is "one hundred forty-four million, eight hundred sixty-five thousand, eight hundred seven".