19091907234243 has 24 divisors (see below), whose sum is σ = 28541462760720. Its totient is φ = 12283303515840.

The previous prime is 19091907234209. The next prime is 19091907234247. The reversal of 19091907234243 is 34243270919091.

19091907234243 is a `hidden beast` number, since 1 + 9 + 0 + 9 + 190 + 7 + 23 + 424 + 3 = 666.

It is not a de Polignac number, because 19091907234243 - 2²¹ = 19091905137091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19091907234243.

It is not an unprimeable number, because it can be changed into a prime (19091907234247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16524121 + ... + 17641722.

It is an arithmetic number, because the mean of its divisors is an integer number (1189227615030).

Almost surely, 2^{19091907234243} is an apocalyptic number.

19091907234243 is a deficient number, since it is larger than the sum of its proper divisors (9449555526477).

19091907234243 is a wasteful number, since it uses less digits than its factorization.

19091907234243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34168019 (or 34168016 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 19091907234243 in words is "nineteen trillion, ninety-one billion, nine hundred seven million, two hundred thirty-four thousand, two hundred forty-three".