643119011 has 8 divisors (see below), whose sum is σ = 677936400. Its totient is φ = 608398560.

The previous prime is 643118999. The next prime is 643119017. The reversal of 643119011 is 110911346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 643119011 - 2¹⁰ = 643117987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (643119017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10400 + ... + 37341.

It is an arithmetic number, because the mean of its divisors is an integer number (84742050).

Almost surely, 2^643119011 is an apocalyptic number.

643119011 is a deficient number, since it is larger than the sum of its proper divisors (34817389).

643119011 is a wasteful number, since it uses less digits than its factorization.

643119011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48469.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 643119011 is about 25359.7912254813. The cubic root of 643119011 is about 863.1715466161.

The spelling of 643119011 in words is "six hundred forty-three million, one hundred nineteen thousand, eleven".