1963149197 has 2 divisors, whose sum is σ = 1963149198. Its totient is φ = 1963149196.

The previous prime is 1963149193. The next prime is 1963149233. The reversal of 1963149197 is 7919413691.

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., 1114825321 + 848323876 = 33389^2 + 29126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1963149197 - 2² = 1963149193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1963149193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981574598 + 981574599.

It is an arithmetic number, because the mean of its divisors is an integer number (981574599).

Almost surely, 2^1963149197 is an apocalyptic number.

It is an amenable number.

1963149197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963149197 is an equidigital number, since it uses as much as digits as its factorization.

1963149197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 1963149197 is about 44307.4395220487. The cubic root of 1963149197 is about 1252.1348472262.

The spelling of 1963149197 in words is "one billion, nine hundred sixty-three million, one hundred forty-nine thousand, one hundred ninety-seven".