945980881 has 6 divisors (see below), whose sum is σ = 950012882. Its totient is φ = 941965920.

The previous prime is 945980831. The next prime is 945980923. The reversal of 945980881 is 188089549.

It can be written as a sum of positive squares in only one way, i.e., 571210000 + 374770881 = 23900^2 + 19359^2 .

It is not a de Polignac number, because 945980881 - 2¹⁷ = 945849809 is a prime.

It is a super-2 number, since 2×945980881² = 1789759654435072322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945980821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48841 + ... + 65401.

Almost surely, 2^945980881 is an apocalyptic number.

It is an amenable number.

945980881 is a deficient number, since it is larger than the sum of its proper divisors (4032001).

945980881 is an equidigital number, since it uses as much as digits as its factorization.

945980881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17039 (or 16800 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 945980881 is about 30756.8021907350. The cubic root of 945980881 is about 981.6593022963.

The spelling of 945980881 in words is "nine hundred forty-five million, nine hundred eighty thousand, eight hundred eighty-one".