643161102 has 16 divisors (see below), whose sum is σ = 1361988432. Its totient is φ = 201776000.

The previous prime is 643161067. The next prime is 643161109. The reversal of 643161102 is 201161346.

643161102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643161109) 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, 3152649 + ... + 3152852.

It is an arithmetic number, because the mean of its divisors is an integer number (85124277).

Almost surely, 2^643161102 is an apocalyptic number.

643161102 is an abundant number, since it is smaller than the sum of its proper divisors (718827330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643161102 is a wasteful number, since it uses less digits than its factorization.

643161102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305523.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 643161102 is about 25360.6210886090. The cubic root of 643161102 is about 863.1903772215.

The spelling of 643161102 in words is "six hundred forty-three million, one hundred sixty-one thousand, one hundred two".