1195909097 has 2 divisors, whose sum is σ = 1195909098. Its totient is φ = 1195909096.

The previous prime is 1195909051. The next prime is 1195909139. The reversal of 1195909097 is 7909095911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193287936 + 2621161 = 34544^2 + 1619^2 .

It is an emirp because it is prime and its reverse (7909095911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1195909097 - 2⁸ = 1195908841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1195909027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597954548 + 597954549.

It is an arithmetic number, because the mean of its divisors is an integer number (597954549).

Almost surely, 2^1195909097 is an apocalyptic number.

It is an amenable number.

1195909097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195909097 is an equidigital number, since it uses as much as digits as its factorization.

1195909097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 229635, while the sum is 50.

The square root of 1195909097 is about 34581.9186425508. The cubic root of 1195909097 is about 1061.4496295892.

The spelling of 1195909097 in words is "one billion, one hundred ninety-five million, nine hundred nine thousand, ninety-seven".