196537949 has 2 divisors, whose sum is σ = 196537950. Its totient is φ = 196537948.

The previous prime is 196537937. The next prime is 196537963. The reversal of 196537949 is 949735691.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132825625 + 63712324 = 11525^2 + 7982^2 .

It is a cyclic number.

It is not a de Polignac number, because 196537949 - 2¹⁶ = 196472413 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196537949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196531949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98268974 + 98268975.

It is an arithmetic number, because the mean of its divisors is an integer number (98268975).

Almost surely, 2^196537949 is an apocalyptic number.

It is an amenable number.

196537949 is a deficient number, since it is larger than the sum of its proper divisors (1).

196537949 is an equidigital number, since it uses as much as digits as its factorization.

196537949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 196537949 is about 14019.1992995321. The cubic root of 196537949 is about 581.4095216532.

The spelling of 196537949 in words is "one hundred ninety-six million, five hundred thirty-seven thousand, nine hundred forty-nine".