19436009426 has 16 divisors (see below), whose sum is σ = 30138594048. Its totient is φ = 9390730800.

The previous prime is 19436009413. The next prime is 19436009429. The reversal of 19436009426 is 62490063491.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19436009429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187145 + ... + 271836.

It is an arithmetic number, because the mean of its divisors is an integer number (1883662128).

Almost surely, 2^19436009426 is an apocalyptic number.

19436009426 is a deficient number, since it is larger than the sum of its proper divisors (10702584622).

19436009426 is a wasteful number, since it uses less digits than its factorization.

19436009426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459697.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 19436009426 in words is "nineteen billion, four hundred thirty-six million, nine thousand, four hundred twenty-six".