881434181 has 2 divisors, whose sum is σ = 881434182. Its totient is φ = 881434180.

The previous prime is 881434109. The next prime is 881434219. The reversal of 881434181 is 181434188.

It is a happy number.

It is an a-pointer prime, because the next prime (881434219) can be obtained adding 881434181 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 726033025 + 155401156 = 26945^2 + 12466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881434181 is a prime.

It is a super-2 number, since 2×881434181² = 1553852430870281522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881437181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440717090 + 440717091.

It is an arithmetic number, because the mean of its divisors is an integer number (440717091).

Almost surely, 2^881434181 is an apocalyptic number.

It is an amenable number.

881434181 is a deficient number, since it is larger than the sum of its proper divisors (1).

881434181 is an equidigital number, since it uses as much as digits as its factorization.

881434181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24576, while the sum is 38.

The square root of 881434181 is about 29688.9572231832. The cubic root of 881434181 is about 958.8042769891.

The spelling of 881434181 in words is "eight hundred eighty-one million, four hundred thirty-four thousand, one hundred eighty-one".