261196093 has 2 divisors, whose sum is σ = 261196094. Its totient is φ = 261196092.

The previous prime is 261196081. The next prime is 261196099. The reversal of 261196093 is 390691162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197627364 + 63568729 = 14058^2 + 7973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261196093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261196099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130598046 + 130598047.

It is an arithmetic number, because the mean of its divisors is an integer number (130598047).

Almost surely, 2^261196093 is an apocalyptic number.

It is an amenable number.

261196093 is a deficient number, since it is larger than the sum of its proper divisors (1).

261196093 is an equidigital number, since it uses as much as digits as its factorization.

261196093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 261196093 is about 16161.5622079055. The cubic root of 261196093 is about 639.2276596372.

The spelling of 261196093 in words is "two hundred sixty-one million, one hundred ninety-six thousand, ninety-three".