981963669 has 16 divisors (see below), whose sum is σ = 1324389440. Its totient is φ = 647118720.

The previous prime is 981963667. The next prime is 981963691. The reversal of 981963669 is 966369189.

It is not a de Polignac number, because 981963669 - 2¹ = 981963667 is a prime.

It is a super-2 number, since 2×981963669² = 1928505294471883122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981963667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146154 + ... + 152724.

It is an arithmetic number, because the mean of its divisors is an integer number (82774340).

Almost surely, 2^981963669 is an apocalyptic number.

It is an amenable number.

981963669 is a deficient number, since it is larger than the sum of its proper divisors (342425771).

981963669 is a wasteful number, since it uses less digits than its factorization.

981963669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140.

The product of its digits is 3779136, while the sum is 57.

The square root of 981963669 is about 31336.2995422242. The cubic root of 981963669 is about 993.9513775983.

The spelling of 981963669 in words is "nine hundred eighty-one million, nine hundred sixty-three thousand, six hundred sixty-nine".