919191909092 has 12 divisors (see below), whose sum is σ = 1612250048640. Its totient is φ = 458549038056.

The previous prime is 919191909037. The next prime is 919191909109. The reversal of 919191909092 is 290909191919.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261727148 + ... + 261730659.

It is an arithmetic number, because the mean of its divisors is an integer number (134354170720).

Almost surely, 2^919191909092 is an apocalyptic number.

It is an amenable number.

919191909092 is a deficient number, since it is larger than the sum of its proper divisors (693058139548).

919191909092 is a wasteful number, since it uses less digits than its factorization.

919191909092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523458250 (or 523458248 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 59.

The spelling of 919191909092 in words is "nine hundred nineteen billion, one hundred ninety-one million, nine hundred nine thousand, ninety-two".