919609109690 has 64 divisors (see below), whose sum is σ = 1762328752128. Its totient is φ = 344953632000.

The previous prime is 919609109621. The next prime is 919609109701. The reversal of 919609109690 is 96901906919.

It is a super-3 number, since 3×919609109690³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1159112 + ... + 1784028.

It is an arithmetic number, because the mean of its divisors is an integer number (27536386752).

Almost surely, 2^919609109690 is an apocalyptic number.

919609109690 is a deficient number, since it is larger than the sum of its proper divisors (842719642438).

919609109690 is a wasteful number, since it uses less digits than its factorization.

919609109690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625103.

The product of its (nonzero) digits is 2125764, while the sum is 59.

The spelling of 919609109690 in words is "nine hundred nineteen billion, six hundred nine million, one hundred nine thousand, six hundred ninety".