961933543 has 2 divisors, whose sum is σ = 961933544. Its totient is φ = 961933542.

The previous prime is 961933529. The next prime is 961933549. The reversal of 961933543 is 345339169.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961933543 - 2⁹ = 961933031 is a prime.

It is a super-2 number, since 2×961933543² = 1850632282297065698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 961933543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961933549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480966771 + 480966772.

It is an arithmetic number, because the mean of its divisors is an integer number (480966772).

Almost surely, 2^961933543 is an apocalyptic number.

961933543 is a deficient number, since it is larger than the sum of its proper divisors (1).

961933543 is an equidigital number, since it uses as much as digits as its factorization.

961933543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 43.

The square root of 961933543 is about 31015.0534902005. The cubic root of 961933543 is about 987.1466810139.

The spelling of 961933543 in words is "nine hundred sixty-one million, nine hundred thirty-three thousand, five hundred forty-three".