19126874340 has 144 divisors (see below), whose sum is σ = 66495881088. Its totient is φ = 4359370752.

The previous prime is 19126874329. The next prime is 19126874353. The reversal of 19126874340 is 4347862191.

19126874340 is a `hidden beast` number, since 19 + 126 + 87 + 434 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 423279 + ... + 466281.

It is an arithmetic number, because the mean of its divisors is an integer number (461776952).

Almost surely, 2^19126874340 is an apocalyptic number.

19126874340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19126874340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33247940544).

19126874340 is an abundant number, since it is smaller than the sum of its proper divisors (47369006748).

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

19126874340 is a wasteful number, since it uses less digits than its factorization.

19126874340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43378 (or 43373 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 19126874340 in words is "nineteen billion, one hundred twenty-six million, eight hundred seventy-four thousand, three hundred forty".