201839194011 has 64 divisors (see below), whose sum is σ = 339722127360. Its totient is φ = 103739304960.

The previous prime is 201839193991. The next prime is 201839194021. The reversal of 201839194011 is 110491938102.

It is not a de Polignac number, because 201839194011 - 2⁷ = 201839193883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (201839194021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9380181 + ... + 9401673.

It is an arithmetic number, because the mean of its divisors is an integer number (5308158240).

Almost surely, 2^201839194011 is an apocalyptic number.

201839194011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201839194011 is a deficient number, since it is larger than the sum of its proper divisors (137882933349).

201839194011 is a wasteful number, since it uses less digits than its factorization.

201839194011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22396.

The product of its (nonzero) digits is 15552, while the sum is 39.

The spelling of 201839194011 in words is "two hundred one billion, eight hundred thirty-nine million, one hundred ninety-four thousand, eleven".