19207779852 has 24 divisors (see below), whose sum is σ = 45030567232. Its totient is φ = 6372248400.

The previous prime is 19207779821. The next prime is 19207779863. The reversal of 19207779852 is 25897770291.

It is a junction number, because it is equal to n+sod(n) for n = 19207779792 and 19207779801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790474 + ... + 3795537.

Almost surely, 2^19207779852 is an apocalyptic number.

19207779852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19207779852 is an abundant number, since it is smaller than the sum of its proper divisors (25822787380).

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

19207779852 is a wasteful number, since it uses less digits than its factorization.

19207779852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586229 (or 7586227 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 19207779852 in words is "nineteen billion, two hundred seven million, seven hundred seventy-nine thousand, eight hundred fifty-two".