201834268887 has 4 divisors (see below), whose sum is σ = 269112358520. Its totient is φ = 134556179256.

The previous prime is 201834268879. The next prime is 201834268891. The reversal of 201834268887 is 788862438102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201834268887 - 2³ = 201834268879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201834268847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33639044812 + ... + 33639044817.

It is an arithmetic number, because the mean of its divisors is an integer number (67278089630).

Almost surely, 2^201834268887 is an apocalyptic number.

201834268887 is a deficient number, since it is larger than the sum of its proper divisors (67278089633).

201834268887 is an equidigital number, since it uses as much as digits as its factorization.

201834268887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67278089632.

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 201834268887 in words is "two hundred one billion, eight hundred thirty-four million, two hundred sixty-eight thousand, eight hundred eighty-seven".