1340292197 has 2 divisors, whose sum is σ = 1340292198. Its totient is φ = 1340292196.

The previous prime is 1340292193. The next prime is 1340292199. The reversal of 1340292197 is 7912920431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334367841 + 5924356 = 36529^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340292197 - 2² = 1340292193 is a prime.

Together with 1340292199, it forms a pair of twin primes.

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 1340292197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340292193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670146098 + 670146099.

It is an arithmetic number, because the mean of its divisors is an integer number (670146099).

Almost surely, 2^1340292197 is an apocalyptic number.

It is an amenable number.

1340292197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340292197 is an equidigital number, since it uses as much as digits as its factorization.

1340292197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1340292197 is about 36610.0013247746. The cubic root of 1340292197 is about 1102.5538998369.

The spelling of 1340292197 in words is "one billion, three hundred forty million, two hundred ninety-two thousand, one hundred ninety-seven".