144192661 has 2 divisors, whose sum is σ = 144192662. Its totient is φ = 144192660.

The previous prime is 144192647. The next prime is 144192673. The reversal of 144192661 is 166291441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137592900 + 6599761 = 11730^2 + 2569^2 .

It is a cyclic number.

It is not a de Polignac number, because 144192661 - 2⁷ = 144192533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144190661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72096330 + 72096331.

It is an arithmetic number, because the mean of its divisors is an integer number (72096331).

Almost surely, 2^144192661 is an apocalyptic number.

It is an amenable number.

144192661 is a deficient number, since it is larger than the sum of its proper divisors (1).

144192661 is an equidigital number, since it uses as much as digits as its factorization.

144192661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 144192661 is about 12008.0248584020. The cubic root of 144192661 is about 524.3819314556.

The spelling of 144192661 in words is "one hundred forty-four million, one hundred ninety-two thousand, six hundred sixty-one".