196101491 has 2 divisors, whose sum is σ = 196101492. Its totient is φ = 196101490.

The previous prime is 196101487. The next prime is 196101533. The reversal of 196101491 is 194101691.

196101491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196101491 - 2² = 196101487 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196101461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98050745 + 98050746.

It is an arithmetic number, because the mean of its divisors is an integer number (98050746).

Almost surely, 2^196101491 is an apocalyptic number.

196101491 is a deficient number, since it is larger than the sum of its proper divisors (1).

196101491 is an equidigital number, since it uses as much as digits as its factorization.

196101491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 196101491 is about 14003.6242094681. The cubic root of 196101491 is about 580.9788178709.

The spelling of 196101491 in words is "one hundred ninety-six million, one hundred one thousand, four hundred ninety-one".