19416942909 has 48 divisors (see below), whose sum is σ = 35223552000. Its totient is φ = 10241882784.

The previous prime is 19416942877. The next prime is 19416942911. The reversal of 19416942909 is 90924961491.

19416942909 is a `hidden beast` number, since 194 + 169 + 4 + 290 + 9 = 666.

It is not a de Polignac number, because 19416942909 - 2⁵ = 19416942877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19416942509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201789 + ... + 282050.

It is an arithmetic number, because the mean of its divisors is an integer number (733824000).

Almost surely, 2^19416942909 is an apocalyptic number.

It is an amenable number.

19416942909 is a deficient number, since it is larger than the sum of its proper divisors (15806609091).

19416942909 is a wasteful number, since it uses less digits than its factorization.

19416942909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483879 (or 483862 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 19416942909 in words is "nineteen billion, four hundred sixteen million, nine hundred forty-two thousand, nine hundred nine".