19375844090 has 32 divisors (see below), whose sum is σ = 35265528144. Its totient is φ = 7664025600.

The previous prime is 19375844087. The next prime is 19375844113. The reversal of 19375844090 is 9044857391.

It can be written as a sum of positive squares in 8 ways, for example, as 18855958489 + 519885601 = 137317^2 + 22801^2 .

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 15 ways as a sum of consecutive naturals, for example, 1250390 + ... + 1265790.

Almost surely, 2^19375844090 is an apocalyptic number.

19375844090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19375844090 is a deficient number, since it is larger than the sum of its proper divisors (15889684054).

19375844090 is a wasteful number, since it uses less digits than its factorization.

19375844090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16802.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 19375844090 in words is "nineteen billion, three hundred seventy-five million, eight hundred forty-four thousand, ninety".