4181534261 has 2 divisors, whose sum is σ = 4181534262. Its totient is φ = 4181534260.

The previous prime is 4181534239. The next prime is 4181534311. The reversal of 4181534261 is 1624351814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4177166161 + 4368100 = 64631^2 + 2090^2 .

It is a cyclic number.

It is not a de Polignac number, because 4181534261 - 2⁶ = 4181534197 is a prime.

It is a super-2 number, since 2×4181534261² = 34970457551833632242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4181534221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090767130 + 2090767131.

It is an arithmetic number, because the mean of its divisors is an integer number (2090767131).

Almost surely, 2^4181534261 is an apocalyptic number.

It is an amenable number.

4181534261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181534261 is an equidigital number, since it uses as much as digits as its factorization.

4181534261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 4181534261 is about 64664.7837775709. The cubic root of 4181534261 is about 1611.0606363310.

The spelling of 4181534261 in words is "four billion, one hundred eighty-one million, five hundred thirty-four thousand, two hundred sixty-one".