961941961 has 8 divisors (see below), whose sum is σ = 968538024. Its totient is φ = 955368960.

The previous prime is 961941913. The next prime is 961941973. The reversal of 961941961 is 169149169.

It can be written as a sum of positive squares in 4 ways, for example, as 157879225 + 804062736 = 12565^2 + 28356^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 961941961 - 2⁷ = 961941833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961941061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82485 + ... + 93421.

It is an arithmetic number, because the mean of its divisors is an integer number (121067253).

Almost surely, 2^961941961 is an apocalyptic number.

It is an amenable number.

961941961 is a deficient number, since it is larger than the sum of its proper divisors (6596063).

961941961 is a wasteful number, since it uses less digits than its factorization.

961941961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11531.

The product of its digits is 104976, while the sum is 46.

The square root of 961941961 is about 31015.1891981977. The cubic root of 961941961 is about 987.1495605533.

The spelling of 961941961 in words is "nine hundred sixty-one million, nine hundred forty-one thousand, nine hundred sixty-one".