2189754431 has 4 divisors (see below), whose sum is σ = 2205508200. Its totient is φ = 2174000664.

The previous prime is 2189754401. The next prime is 2189754481. The reversal of 2189754431 is 1344579812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2189754431 - 2¹⁸ = 2189492287 is a prime.

It is a super-2 number, since 2×2189754431² = 9590048936168267522, 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 (2189754401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7876676 + ... + 7876953.

It is an arithmetic number, because the mean of its divisors is an integer number (551377050).

Almost surely, 2^2189754431 is an apocalyptic number.

2189754431 is a deficient number, since it is larger than the sum of its proper divisors (15753769).

2189754431 is a wasteful number, since it uses less digits than its factorization.

2189754431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15753768.

The product of its digits is 241920, while the sum is 44.

The square root of 2189754431 is about 46794.8120094525. The cubic root of 2189754431 is about 1298.5693197691.

The spelling of 2189754431 in words is "two billion, one hundred eighty-nine million, seven hundred fifty-four thousand, four hundred thirty-one".