881938481 has 4 divisors (see below), whose sum is σ = 882238500. Its totient is φ = 881638464.

The previous prime is 881938429. The next prime is 881938483. The reversal of 881938481 is 184839188.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165894400 + 716044081 = 12880^2 + 26759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881938481 is a prime.

It is a super-2 number, since 2×881938481² = 1555630968537174722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (881938483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145556 + ... + 151493.

It is an arithmetic number, because the mean of its divisors is an integer number (220559625).

Almost surely, 2^881938481 is an apocalyptic number.

It is an amenable number.

881938481 is a deficient number, since it is larger than the sum of its proper divisors (300019).

881938481 is a wasteful number, since it uses less digits than its factorization.

881938481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300018.

The product of its digits is 442368, while the sum is 50.

The square root of 881938481 is about 29697.4490655342. The cubic root of 881938481 is about 958.9870975266.

The spelling of 881938481 in words is "eight hundred eighty-one million, nine hundred thirty-eight thousand, four hundred eighty-one".