194281106091 has 16 divisors (see below), whose sum is σ = 264391395840. Its totient is φ = 126854339040.

The previous prime is 194281106081. The next prime is 194281106101. The reversal of 194281106091 is 190601182491.

It is an interprime number because it is at equal distance from previous prime (194281106081) and next prime (194281106101).

It is not a de Polignac number, because 194281106091 - 2¹⁵ = 194281073323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194281106021) 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, 979171 + ... + 1160748.

It is an arithmetic number, because the mean of its divisors is an integer number (16524462240).

Almost surely, 2^194281106091 is an apocalyptic number.

194281106091 is a deficient number, since it is larger than the sum of its proper divisors (70110289749).

194281106091 is a wasteful number, since it uses less digits than its factorization.

194281106091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140546.

The product of its (nonzero) digits is 31104, while the sum is 42.

The spelling of 194281106091 in words is "one hundred ninety-four billion, two hundred eighty-one million, one hundred six thousand, ninety-one".