19150439380 has 24 divisors (see below), whose sum is σ = 40221193320. Its totient is φ = 7659171840.

The previous prime is 19150439311. The next prime is 19150439381. The reversal of 19150439380 is 8393405191.

It can be written as a sum of positive squares in 4 ways, for example, as 69989956 + 19080449424 = 8366^2 + 138132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19150439381) 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, 104556 + ... + 221884.

It is an arithmetic number, because the mean of its divisors is an integer number (1675883055).

Almost surely, 2^19150439380 is an apocalyptic number.

19150439380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19150439380 is an abundant number, since it is smaller than the sum of its proper divisors (21070753940).

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

19150439380 is a wasteful number, since it uses less digits than its factorization.

19150439380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125499 (or 125497 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 19150439380 in words is "nineteen billion, one hundred fifty million, four hundred thirty-nine thousand, three hundred eighty".