881378541 has 6 divisors (see below), whose sum is σ = 1273102350. Its totient is φ = 587585688.

The previous prime is 881378503. The next prime is 881378609. The reversal of 881378541 is 145873188.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 727866441 + 153512100 = 26979^2 + 12390^2 .

It is not a de Polignac number, because 881378541 - 2¹⁷ = 881247469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881378041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48965466 + ... + 48965483.

It is an arithmetic number, because the mean of its divisors is an integer number (212183725).

Almost surely, 2^881378541 is an apocalyptic number.

It is an amenable number.

881378541 is a deficient number, since it is larger than the sum of its proper divisors (391723809).

881378541 is a wasteful number, since it uses less digits than its factorization.

881378541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97930955 (or 97930952 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 881378541 is about 29688.0201596536. The cubic root of 881378541 is about 958.7841019177.

The spelling of 881378541 in words is "eight hundred eighty-one million, three hundred seventy-eight thousand, five hundred forty-one".