19081934385 has 16 divisors (see below), whose sum is σ = 30545006784. Its totient is φ = 10172394432.

The previous prime is 19081934363. The next prime is 19081934387. The reversal of 19081934385 is 58343918091.

It is not a de Polignac number, because 19081934385 - 2⁶ = 19081934321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19081934387) 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, 255682 + ... + 321771.

It is an arithmetic number, because the mean of its divisors is an integer number (1909062924).

Almost surely, 2^19081934385 is an apocalyptic number.

19081934385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19081934385 is a deficient number, since it is larger than the sum of its proper divisors (11463072399).

19081934385 is a wasteful number, since it uses less digits than its factorization.

19081934385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579664.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 19081934385 in words is "nineteen billion, eighty-one million, nine hundred thirty-four thousand, three hundred eighty-five".