1912956193 has 2 divisors, whose sum is σ = 1912956194. Its totient is φ = 1912956192.

The previous prime is 1912956191. The next prime is 1912956197. The reversal of 1912956193 is 3916592191.

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., 1470569104 + 442387089 = 38348^2 + 21033^2 .

It is a cyclic number.

It is not a de Polignac number, because 1912956193 - 2¹ = 1912956191 is a prime.

Together with 1912956191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1912956191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956478096 + 956478097.

It is an arithmetic number, because the mean of its divisors is an integer number (956478097).

Almost surely, 2^1912956193 is an apocalyptic number.

It is an amenable number.

1912956193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912956193 is an equidigital number, since it uses as much as digits as its factorization.

1912956193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 46.

The square root of 1912956193 is about 43737.3546639483. The cubic root of 1912956193 is about 1241.3712269861.

The spelling of 1912956193 in words is "one billion, nine hundred twelve million, nine hundred fifty-six thousand, one hundred ninety-three".