2173664733 has 32 divisors (see below), whose sum is σ = 3156451200. Its totient is φ = 1325952000.

The previous prime is 2173664699. The next prime is 2173664737. The reversal of 2173664733 is 3374663712.

It is not a de Polignac number, because 2173664733 - 2²⁰ = 2172616157 is a prime.

It is a super-2 number, since 2×2173664733² = 9449636742975922578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173664737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231433 + ... + 240641.

It is an arithmetic number, because the mean of its divisors is an integer number (98639100).

Almost surely, 2^2173664733 is an apocalyptic number.

It is an amenable number.

2173664733 is a deficient number, since it is larger than the sum of its proper divisors (982786467).

2173664733 is a wasteful number, since it uses less digits than its factorization.

2173664733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373.

The product of its digits is 381024, while the sum is 42.

The square root of 2173664733 is about 46622.5775027507. The cubic root of 2173664733 is about 1295.3809909455.

The spelling of 2173664733 in words is "two billion, one hundred seventy-three million, six hundred sixty-four thousand, seven hundred thirty-three".