881944057 has 2 divisors, whose sum is σ = 881944058. Its totient is φ = 881944056.

The previous prime is 881944013. The next prime is 881944067. The reversal of 881944057 is 750449188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738806761 + 143137296 = 27181^2 + 11964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881944057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 881943998 and 881944016.

It is not a weakly prime, because it can be changed into another prime (881944067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440972028 + 440972029.

It is an arithmetic number, because the mean of its divisors is an integer number (440972029).

Almost surely, 2^881944057 is an apocalyptic number.

It is an amenable number.

881944057 is a deficient number, since it is larger than the sum of its proper divisors (1).

881944057 is an equidigital number, since it uses as much as digits as its factorization.

881944057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 881944057 is about 29697.5429455031. The cubic root of 881944057 is about 958.9891185673.

The spelling of 881944057 in words is "eight hundred eighty-one million, nine hundred forty-four thousand, fifty-seven".