2172681469 has 32 divisors (see below), whose sum is σ = 2624847872. Its totient is φ = 1759320000.

The previous prime is 2172681461. The next prime is 2172681473. The reversal of 2172681469 is 9641862712.

It is a cyclic number.

It is not a de Polignac number, because 2172681469 - 2³ = 2172681461 is a prime.

It is a super-2 number, since 2×2172681469² = 9441089531471995922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172681461) 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, 1998244 + ... + 1999330.

It is an arithmetic number, because the mean of its divisors is an integer number (82026496).

Almost surely, 2^2172681469 is an apocalyptic number.

It is an amenable number.

2172681469 is a deficient number, since it is larger than the sum of its proper divisors (452166403).

2172681469 is a wasteful number, since it uses less digits than its factorization.

2172681469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337.

The product of its digits is 290304, while the sum is 46.

The square root of 2172681469 is about 46612.0313760299. The cubic root of 2172681469 is about 1295.1856382802.

The spelling of 2172681469 in words is "two billion, one hundred seventy-two million, six hundred eighty-one thousand, four hundred sixty-nine".