1185351397 has 2 divisors, whose sum is σ = 1185351398. Its totient is φ = 1185351396.

The previous prime is 1185351353. The next prime is 1185351407. The reversal of 1185351397 is 7931535811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 718186401 + 467164996 = 26799^2 + 21614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1185351397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1185351317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592675698 + 592675699.

It is an arithmetic number, because the mean of its divisors is an integer number (592675699).

Almost surely, 2^1185351397 is an apocalyptic number.

It is an amenable number.

1185351397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185351397 is an equidigital number, since it uses as much as digits as its factorization.

1185351397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 43.

The square root of 1185351397 is about 34428.9325567901. The cubic root of 1185351397 is about 1058.3168365682.

The spelling of 1185351397 in words is "one billion, one hundred eighty-five million, three hundred fifty-one thousand, three hundred ninety-seven".