196131493 has 2 divisors, whose sum is σ = 196131494. Its totient is φ = 196131492.

The previous prime is 196131479. The next prime is 196131527. The reversal of 196131493 is 394131691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195944004 + 187489 = 13998^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 196131493 - 2²¹ = 194034341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196131293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98065746 + 98065747.

It is an arithmetic number, because the mean of its divisors is an integer number (98065747).

Almost surely, 2^196131493 is an apocalyptic number.

It is an amenable number.

196131493 is a deficient number, since it is larger than the sum of its proper divisors (1).

196131493 is an equidigital number, since it uses as much as digits as its factorization.

196131493 is an odious number, because the sum of its binary digits is odd.

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

The square root of 196131493 is about 14004.6953911893. The cubic root of 196131493 is about 581.0084447707.

The spelling of 196131493 in words is "one hundred ninety-six million, one hundred thirty-one thousand, four hundred ninety-three".