2189754867 has 6 divisors (see below), whose sum is σ = 2919781228. Its totient is φ = 1459782544.

The previous prime is 2189754857. The next prime is 2189754871. The reversal of 2189754867 is 7684579812.

It is not a de Polignac number, because 2189754867 - 2¹⁰ = 2189753843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189754817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67543 + ... + 94559.

Almost surely, 2^2189754867 is an apocalyptic number.

2189754867 is a deficient number, since it is larger than the sum of its proper divisors (730026361).

2189754867 is an frugal number, since it uses more digits than its factorization.

2189754867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54037 (or 27020 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 57.

The square root of 2189754867 is about 46794.8166680884. The cubic root of 2189754867 is about 1298.5694059547.

The spelling of 2189754867 in words is "two billion, one hundred eighty-nine million, seven hundred fifty-four thousand, eight hundred sixty-seven".