919617707089 has 3 divisors (see below), whose sum is σ = 919618666057. Its totient is φ = 919616748122.

The previous prime is 919617707083. The next prime is 919617707161. The reversal of 919617707089 is 980707716919.

The square root of 919617707089 is 958967.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 919617707089 - 2¹⁹ = 919617182801 is a prime.

It is a super-3 number, since 3×919617707089³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 919617707089.

It is not an unprimeable number, because it can be changed into a prime (919617707083) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 479484 + ... + 1438450.

Almost surely, 2^919617707089 is an apocalyptic number.

919617707089 is the 958967-th square number.

919617707089 is the 479484-th centered octagonal number.

It is an amenable number.

919617707089 is a deficient number, since it is larger than the sum of its proper divisors (958968).

919617707089 is an frugal number, since it uses more digits than its factorization.

919617707089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917934 (or 958967 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 64.

Multiplying 919617707089 by its sum of digits (64), we get a square (58855533253696 = 7671736²).

The spelling of 919617707089 in words is "nine hundred nineteen billion, six hundred seventeen million, seven hundred seven thousand, eighty-nine".