2169893681 has 8 divisors (see below), whose sum is σ = 2216406240. Its totient is φ = 2123705728.

The previous prime is 2169893659. The next prime is 2169893699. The reversal of 2169893681 is 1863989612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2169893681 is a prime.

It is a super-2 number, since 2×2169893681² = 9416877173687459522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2169893641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67616 + ... + 94401.

It is an arithmetic number, because the mean of its divisors is an integer number (277050780).

Almost surely, 2^2169893681 is an apocalyptic number.

It is an amenable number.

2169893681 is a deficient number, since it is larger than the sum of its proper divisors (46512559).

2169893681 is a wasteful number, since it uses less digits than its factorization.

2169893681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162303.

The product of its digits is 1119744, while the sum is 53.

The square root of 2169893681 is about 46582.1176096579. The cubic root of 2169893681 is about 1294.6314462303.

The spelling of 2169893681 in words is "two billion, one hundred sixty-nine million, eight hundred ninety-three thousand, six hundred eighty-one".