1654323889 has 4 divisors (see below), whose sum is σ = 1654935040. Its totient is φ = 1653712740.

The previous prime is 1654323871. The next prime is 1654323893. The reversal of 1654323889 is 9883234561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9883234561 = 3119 ⋅3168719.

It is a cyclic number.

It is not a de Polignac number, because 1654323889 - 2¹⁹ = 1653799601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1654323809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301497 + ... + 306934.

It is an arithmetic number, because the mean of its divisors is an integer number (413733760).

Almost surely, 2^1654323889 is an apocalyptic number.

It is an amenable number.

1654323889 is a deficient number, since it is larger than the sum of its proper divisors (611151).

1654323889 is an equidigital number, since it uses as much as digits as its factorization.

1654323889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611150.

The product of its digits is 1244160, while the sum is 49.

The square root of 1654323889 is about 40673.3805946838. The cubic root of 1654323889 is about 1182.6970504487.

The spelling of 1654323889 in words is "one billion, six hundred fifty-four million, three hundred twenty-three thousand, eight hundred eighty-nine".