1143501083181 has 12 divisors (see below), whose sum is σ = 1651733395260. Its totient is φ = 762329620800.

The previous prime is 1143501083171. The next prime is 1143501083191. The reversal of 1143501083181 is 1813801053411.

It is a happy number.

1143501083181 is a `hidden beast` number, since 1 + 1 + 43 + 501 + 0 + 8 + 31 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (1143501083171) and next prime (1143501083191).

It can be written as a sum of positive squares in 2 ways, for example, as 457867402281 + 685633680900 = 676659^2 + 828030^2 .

It is not a de Polignac number, because 1143501083181 - 2⁶ = 1143501083117 is a prime.

It is a super-2 number, since 2×1143501083181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143501083141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2214531 + ... + 2681631.

It is an arithmetic number, because the mean of its divisors is an integer number (137644449605).

Almost surely, 2^{1143501083181} is an apocalyptic number.

It is an amenable number.

1143501083181 is a deficient number, since it is larger than the sum of its proper divisors (508232312079).

1143501083181 is a wasteful number, since it uses less digits than its factorization.

1143501083181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739116 (or 739113 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 1143501083181 in words is "one trillion, one hundred forty-three billion, five hundred one million, eighty-three thousand, one hundred eighty-one".