2163687469 has 4 divisors (see below), whose sum is σ = 2165615296. Its totient is φ = 2161759644.

The previous prime is 2163687437. The next prime is 2163687521. The reversal of 2163687469 is 9647863612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2163687469 - 2⁵ = 2163687437 is a prime.

It is a super-2 number, since 2×2163687469² = 9363086927015251922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163681469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962229 + ... + 964474.

It is an arithmetic number, because the mean of its divisors is an integer number (541403824).

Almost surely, 2^2163687469 is an apocalyptic number.

It is an amenable number.

2163687469 is a deficient number, since it is larger than the sum of its proper divisors (1927827).

2163687469 is a wasteful number, since it uses less digits than its factorization.

2163687469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927826.

The product of its digits is 2612736, while the sum is 52.

The square root of 2163687469 is about 46515.4540878620. The cubic root of 2163687469 is about 1293.3959894466.

The spelling of 2163687469 in words is "two billion, one hundred sixty-three million, six hundred eighty-seven thousand, four hundred sixty-nine".