961419181 has 4 divisors (see below), whose sum is σ = 964993500. Its totient is φ = 957844864.

The previous prime is 961419163. The next prime is 961419187. The reversal of 961419181 is 181914169.

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 115132900 + 846286281 = 10730^2 + 29091^2 .

It is a cyclic number.

It is not a de Polignac number, because 961419181 - 2⁵ = 961419149 is a prime.

It is a super-2 number, since 2×961419181² = 1848653683189421522, 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 (961419187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786756 + ... + 1787293.

It is an arithmetic number, because the mean of its divisors is an integer number (241248375).

Almost surely, 2^961419181 is an apocalyptic number.

It is an amenable number.

961419181 is a deficient number, since it is larger than the sum of its proper divisors (3574319).

961419181 is a wasteful number, since it uses less digits than its factorization.

961419181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574318.

The product of its digits is 15552, while the sum is 40.

The square root of 961419181 is about 31006.7602467591. The cubic root of 961419181 is about 986.9707016812.

The spelling of 961419181 in words is "nine hundred sixty-one million, four hundred nineteen thousand, one hundred eighty-one".