143319649 has 4 divisors (see below), whose sum is σ = 156348720. Its totient is φ = 130290580.

The previous prime is 143319643. The next prime is 143319713. The reversal of 143319649 is 946913341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143319649 - 2⁷ = 143319521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143319643) 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 in 3 ways as a sum of consecutive naturals, for example, 6514519 + ... + 6514540.

It is an arithmetic number, because the mean of its divisors is an integer number (39087180).

Almost surely, 2^143319649 is an apocalyptic number.

It is an amenable number.

143319649 is a deficient number, since it is larger than the sum of its proper divisors (13029071).

143319649 is a wasteful number, since it uses less digits than its factorization.

143319649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13029070.

The product of its digits is 69984, while the sum is 40.

The square root of 143319649 is about 11971.6184787187. The cubic root of 143319649 is about 523.3215013034.

The spelling of 143319649 in words is "one hundred forty-three million, three hundred nineteen thousand, six hundred forty-nine".