19207436420 has 24 divisors (see below), whose sum is σ = 41193823104. Its totient is φ = 7519506656.

The previous prime is 19207436393. The next prime is 19207436431. The reversal of 19207436420 is 2463470291.

It is a super-2 number, since 2×19207436420² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10215782 + ... + 10217661.

It is an arithmetic number, because the mean of its divisors is an integer number (1716409296).

Almost surely, 2^19207436420 is an apocalyptic number.

19207436420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19207436420 is an abundant number, since it is smaller than the sum of its proper divisors (21986386684).

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

19207436420 is a wasteful number, since it uses less digits than its factorization.

19207436420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20433499 (or 20433497 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 19207436420 in words is "nineteen billion, two hundred seven million, four hundred thirty-six thousand, four hundred twenty".