1919091910122 has 24 divisors (see below), whose sum is σ = 4176189827940. Its totient is φ = 636903864000.

The previous prime is 1919091910117. The next prime is 1919091910147. The reversal of 1919091910122 is 2210191909191.

It can be written as a sum of positive squares in 2 ways, for example, as 1894584320721 + 24507589401 = 1376439^2 + 156549^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232782379 + ... + 232790622.

Almost surely, 2^{1919091910122} is an apocalyptic number.

1919091910122 is an abundant number, since it is smaller than the sum of its proper divisors (2257097917818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1919091910122 is a wasteful number, since it uses less digits than its factorization.

1919091910122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465573238 (or 465573235 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 45.

The spelling of 1919091910122 in words is "one trillion, nine hundred nineteen billion, ninety-one million, nine hundred ten thousand, one hundred twenty-two".