1440160181 has 2 divisors, whose sum is σ = 1440160182. Its totient is φ = 1440160180.

The previous prime is 1440160177. The next prime is 1440160207. The reversal of 1440160181 is 1810610441.

It is an a-pointer prime, because the next prime (1440160207) can be obtained adding 1440160181 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1069944100 + 370216081 = 32710^2 + 19241^2 .

It is an emirp because it is prime and its reverse (1810610441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440160181 - 2² = 1440160177 is a prime.

It is a super-2 number, since 2×1440160181² = 4148122693875905522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1440160181.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720080090 + 720080091.

It is an arithmetic number, because the mean of its divisors is an integer number (720080091).

Almost surely, 2^1440160181 is an apocalyptic number.

It is an amenable number.

1440160181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440160181 is an equidigital number, since it uses as much as digits as its factorization.

1440160181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1440160181 is about 37949.4424333217. The cubic root of 1440160181 is about 1129.2851042415.

The spelling of 1440160181 in words is "one billion, four hundred forty million, one hundred sixty thousand, one hundred eighty-one".