2173451964 has 12 divisors (see below), whose sum is σ = 5071387944. Its totient is φ = 724483984.

The previous prime is 2173451963. The next prime is 2173451983. The reversal of 2173451964 is 4691543712.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173451963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90560487 + ... + 90560510.

It is an arithmetic number, because the mean of its divisors is an integer number (422615662).

Almost surely, 2^2173451964 is an apocalyptic number.

It is an amenable number.

2173451964 is an abundant number, since it is smaller than the sum of its proper divisors (2897935980).

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

2173451964 is a wasteful number, since it uses less digits than its factorization.

2173451964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181121004 (or 181121002 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 2173451964 is about 46620.2956232583. The cubic root of 2173451964 is about 1295.3387234778.

The spelling of 2173451964 in words is "two billion, one hundred seventy-three million, four hundred fifty-one thousand, nine hundred sixty-four".