19090911010 has 24 divisors (see below), whose sum is σ = 36267449436. Its totient is φ = 7234449120.

The previous prime is 19090911001. The next prime is 19090911011. The reversal of 19090911010 is 1011909091.

It can be written as a sum of positive squares in 2 ways, for example, as 17846020921 + 1244890089 = 133589^2 + 35283^2 .

It is not an unprimeable number, because it can be changed into a prime (19090911011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2640561 + ... + 2647780.

Almost surely, 2^19090911010 is an apocalyptic number.

19090911010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19090911010 is a deficient number, since it is larger than the sum of its proper divisors (17176538426).

19090911010 is a wasteful number, since it uses less digits than its factorization.

19090911010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5288386 (or 5288367 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 19090911010 in words is "nineteen billion, ninety million, nine hundred eleven thousand, ten".