143642919349 has 2 divisors, whose sum is σ = 143642919350. Its totient is φ = 143642919348.

The previous prime is 143642919311. The next prime is 143642919353. The reversal of 143642919349 is 943919246341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143627356324 + 15563025 = 378982^2 + 3945^2 .

It is a cyclic number.

It is not a de Polignac number, because 143642919349 - 2³¹ = 141495435701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143642919349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143642916349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71821459674 + 71821459675.

It is an arithmetic number, because the mean of its divisors is an integer number (71821459675).

Almost surely, 2^143642919349 is an apocalyptic number.

It is an amenable number.

143642919349 is a deficient number, since it is larger than the sum of its proper divisors (1).

143642919349 is an equidigital number, since it uses as much as digits as its factorization.

143642919349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 55.

The spelling of 143642919349 in words is "one hundred forty-three billion, six hundred forty-two million, nine hundred nineteen thousand, three hundred forty-nine".