19419500837 has 4 divisors (see below), whose sum is σ = 21184910016. Its totient is φ = 17654091660.

The previous prime is 19419500833. The next prime is 19419500873. The reversal of 19419500837 is 73800591491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19419500837 - 2² = 19419500833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19419500791 and 19419500800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19419500833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882704573 + ... + 882704594.

It is an arithmetic number, because the mean of its divisors is an integer number (5296227504).

Almost surely, 2^19419500837 is an apocalyptic number.

It is an amenable number.

19419500837 is a deficient number, since it is larger than the sum of its proper divisors (1765409179).

19419500837 is a wasteful number, since it uses less digits than its factorization.

19419500837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765409178.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 19419500837 in words is "nineteen billion, four hundred nineteen million, five hundred thousand, eight hundred thirty-seven".