1651438316889 has 15 divisors (see below), whose sum is σ = 2466980688997. Its totient is φ = 1100951167428.

The previous prime is 1651438316867. The next prime is 1651438316897. The reversal of 1651438316889 is 9886138341561.

The square root of 1651438316889 is 1285083.

It is a perfect power (a square), and thus also a powerful number.

1651438316889 is a `hidden beast` number, since 1 + 6 + 5 + 14 + 383 + 168 + 89 = 666.

It is not a de Polignac number, because 1651438316889 - 2⁹ = 1651438316377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1651438316809) 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 14 ways as a sum of consecutive naturals, for example, 11494354 + ... + 11637140.

Almost surely, 2^{1651438316889} is an apocalyptic number.

1651438316889 is the 1285083-rd square number.

1651438316889 is the 642542-nd centered octagonal number.

It is an amenable number.

1651438316889 is a deficient number, since it is larger than the sum of its proper divisors (815542372108).

1651438316889 is an frugal number, since it uses more digits than its factorization.

1651438316889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285586 (or 142790 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 1651438316889 in words is "one trillion, six hundred fifty-one billion, four hundred thirty-eight million, three hundred sixteen thousand, eight hundred eighty-nine".