281957134238 has 16 divisors (see below), whose sum is σ = 455848508976. Its totient is φ = 130025692800.

The previous prime is 281957134231. The next prime is 281957134267. The reversal of 281957134238 is 832431759182.

It is a self number, because there is not a number n which added to its sum of digits gives 281957134238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281957134231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4483556 + ... + 4546007.

It is an arithmetic number, because the mean of its divisors is an integer number (28490531811).

Almost surely, 2^281957134238 is an apocalyptic number.

281957134238 is a deficient number, since it is larger than the sum of its proper divisors (173891374738).

281957134238 is a wasteful number, since it uses less digits than its factorization.

281957134238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030779.

The product of its digits is 2903040, while the sum is 53.

The spelling of 281957134238 in words is "two hundred eighty-one billion, nine hundred fifty-seven million, one hundred thirty-four thousand, two hundred thirty-eight".