19877229468 has 48 divisors (see below), whose sum is σ = 54245856000. Its totient is φ = 6277019184.

The previous prime is 19877229467. The next prime is 19877229479. The reversal of 19877229468 is 86492277891.

19877229468 is a `hidden beast` number, since 1 + 9 + 87 + 72 + 29 + 468 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19877229461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4841328 + ... + 4845431.

It is an arithmetic number, because the mean of its divisors is an integer number (1130122000).

Almost surely, 2^19877229468 is an apocalyptic number.

19877229468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19877229468 is an abundant number, since it is smaller than the sum of its proper divisors (34368626532).

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

19877229468 is a wasteful number, since it uses less digits than its factorization.

19877229468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9686791 (or 9686783 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 19877229468 in words is "nineteen billion, eight hundred seventy-seven million, two hundred twenty-nine thousand, four hundred sixty-eight".