2172054993 has 16 divisors (see below), whose sum is σ = 3012007680. Its totient is φ = 1391060736.

The previous prime is 2172054893. The next prime is 2172055009. The reversal of 2172054993 is 3994502712.

It is not a de Polignac number, because 2172054993 - 2¹² = 2172050897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172054893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115080 + ... + 132617.

It is an arithmetic number, because the mean of its divisors is an integer number (188250480).

Almost surely, 2^2172054993 is an apocalyptic number.

It is an amenable number.

2172054993 is a deficient number, since it is larger than the sum of its proper divisors (839952687).

2172054993 is a wasteful number, since it uses less digits than its factorization.

2172054993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247816.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 2172054993 is about 46605.3107810687. The cubic root of 2172054993 is about 1295.0611407059.

The spelling of 2172054993 in words is "two billion, one hundred seventy-two million, fifty-four thousand, nine hundred ninety-three".