183514051981 has 16 divisors (see below), whose sum is σ = 198951545520. Its totient is φ = 168268746240.

The previous prime is 183514051951. The next prime is 183514052003. The reversal of 183514051981 is 189150415381.

183514051981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 95939487081 + 87574564900 = 309741^2 + 295930^2 .

It is a cyclic number.

It is not a de Polignac number, because 183514051981 - 2⁵ = 183514051949 is a prime.

It is a super-2 number, since 2×183514051981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183514051951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1203255 + ... + 1347163.

It is an arithmetic number, because the mean of its divisors is an integer number (12434471595).

Almost surely, 2^183514051981 is an apocalyptic number.

It is an amenable number.

183514051981 is a deficient number, since it is larger than the sum of its proper divisors (15437493539).

183514051981 is a wasteful number, since it uses less digits than its factorization.

183514051981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144576.

The product of its (nonzero) digits is 172800, while the sum is 46.

The spelling of 183514051981 in words is "one hundred eighty-three billion, five hundred fourteen million, fifty-one thousand, nine hundred eighty-one".