881140945 has 4 divisors (see below), whose sum is σ = 1057369140. Its totient is φ = 704912752.

The previous prime is 881140927. The next prime is 881141003. The reversal of 881140945 is 549041188.

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 316270656 + 564870289 = 17784^2 + 23767^2 .

It is a cyclic number.

It is not a de Polignac number, because 881140945 - 2⁷ = 881140817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 881140898 and 881140907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88114090 + ... + 88114099.

It is an arithmetic number, because the mean of its divisors is an integer number (264342285).

Almost surely, 2^881140945 is an apocalyptic number.

It is an amenable number.

881140945 is a deficient number, since it is larger than the sum of its proper divisors (176228195).

881140945 is a wasteful number, since it uses less digits than its factorization.

881140945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176228194.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 881140945 is about 29684.0183432095. The cubic root of 881140945 is about 958.6979400210.

The spelling of 881140945 in words is "eight hundred eighty-one million, one hundred forty thousand, nine hundred forty-five".