1363665197 has 2 divisors, whose sum is σ = 1363665198. Its totient is φ = 1363665196.

The previous prime is 1363665157. The next prime is 1363665221. The reversal of 1363665197 is 7915663631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1332907081 + 30758116 = 36509^2 + 5546^2 .

It is a cyclic number.

It is not a de Polignac number, because 1363665197 - 2¹⁴ = 1363648813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1363665157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 681832598 + 681832599.

It is an arithmetic number, because the mean of its divisors is an integer number (681832599).

Almost surely, 2^1363665197 is an apocalyptic number.

It is an amenable number.

1363665197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363665197 is an equidigital number, since it uses as much as digits as its factorization.

1363665197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 1363665197 is about 36927.8376973253. The cubic root of 1363665197 is about 1108.9260497035.

The spelling of 1363665197 in words is "one billion, three hundred sixty-three million, six hundred sixty-five thousand, one hundred ninety-seven".