196140149 has 2 divisors, whose sum is σ = 196140150. Its totient is φ = 196140148.

The previous prime is 196140083. The next prime is 196140163. The reversal of 196140149 is 941041691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162384049 + 33756100 = 12743^2 + 5810^2 .

It is an emirp because it is prime and its reverse (941041691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196140149 - 2¹² = 196136053 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196140179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98070074 + 98070075.

It is an arithmetic number, because the mean of its divisors is an integer number (98070075).

Almost surely, 2^196140149 is an apocalyptic number.

It is an amenable number.

196140149 is a deficient number, since it is larger than the sum of its proper divisors (1).

196140149 is an equidigital number, since it uses as much as digits as its factorization.

196140149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 196140149 is about 14005.0044269897. The cubic root of 196140149 is about 581.0169919874.

The spelling of 196140149 in words is "one hundred ninety-six million, one hundred forty thousand, one hundred forty-nine".