961181833 has 2 divisors, whose sum is σ = 961181834. Its totient is φ = 961181832.

The previous prime is 961181821. The next prime is 961181839. The reversal of 961181833 is 338181169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 895685184 + 65496649 = 29928^2 + 8093^2 .

It is an emirp because it is prime and its reverse (338181169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961181833 - 2²¹ = 959084681 is a prime.

It is not a weakly prime, because it can be changed into another prime (961181839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480590916 + 480590917.

It is an arithmetic number, because the mean of its divisors is an integer number (480590917).

Almost surely, 2^961181833 is an apocalyptic number.

It is an amenable number.

961181833 is a deficient number, since it is larger than the sum of its proper divisors (1).

961181833 is an equidigital number, since it uses as much as digits as its factorization.

961181833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 961181833 is about 31002.9326516057. The cubic root of 961181833 is about 986.8894763405.

The spelling of 961181833 in words is "nine hundred sixty-one million, one hundred eighty-one thousand, eight hundred thirty-three".