281538153381 has 16 divisors (see below), whose sum is σ = 376481473088. Its totient is φ = 187144214400.

The previous prime is 281538153367. The next prime is 281538153383. The reversal of 281538153381 is 183351835182.

281538153381 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 281538153381 - 2⁵ = 281538153349 is a prime.

It is a super-2 number, since 2×281538153381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281538153381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281538153383) 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, 1428186 + ... + 1613316.

It is an arithmetic number, because the mean of its divisors is an integer number (23530092068).

Almost surely, 2^281538153381 is an apocalyptic number.

It is an amenable number.

281538153381 is a deficient number, since it is larger than the sum of its proper divisors (94943319707).

281538153381 is a wasteful number, since it uses less digits than its factorization.

281538153381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186612.

The product of its digits is 691200, while the sum is 48.

The spelling of 281538153381 in words is "two hundred eighty-one billion, five hundred thirty-eight million, one hundred fifty-three thousand, three hundred eighty-one".