19163749380 has 24 divisors (see below), whose sum is σ = 53658498432. Its totient is φ = 5110333152.

The previous prime is 19163749351. The next prime is 19163749387. The reversal of 19163749380 is 8394736191.

It is not an unprimeable number, because it can be changed into a prime (19163749387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159697852 + ... + 159697971.

It is an arithmetic number, because the mean of its divisors is an integer number (2235770768).

Almost surely, 2^19163749380 is an apocalyptic number.

19163749380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19163749380 is an abundant number, since it is smaller than the sum of its proper divisors (34494749052).

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

19163749380 is a wasteful number, since it uses less digits than its factorization.

19163749380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319395835 (or 319395833 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 19163749380 in words is "nineteen billion, one hundred sixty-three million, seven hundred forty-nine thousand, three hundred eighty".