2173921383 has 32 divisors (see below), whose sum is σ = 3058366464. Its totient is φ = 1370885472.

The previous prime is 2173921367. The next prime is 2173921391. The reversal of 2173921383 is 3831293712.

It is not a de Polignac number, because 2173921383 - 2⁴ = 2173921367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173921303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3182560 + ... + 3183242.

It is an arithmetic number, because the mean of its divisors is an integer number (95573952).

Almost surely, 2^2173921383 is an apocalyptic number.

2173921383 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2173921383 is a deficient number, since it is larger than the sum of its proper divisors (884445081).

2173921383 is a wasteful number, since it uses less digits than its factorization.

2173921383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its digits is 54432, while the sum is 39.

The square root of 2173921383 is about 46625.3298433373. The cubic root of 2173921383 is about 1295.4319718906.

The spelling of 2173921383 in words is "two billion, one hundred seventy-three million, nine hundred twenty-one thousand, three hundred eighty-three".