1913161097 has 2 divisors, whose sum is σ = 1913161098. Its totient is φ = 1913161096.

The previous prime is 1913161069. The next prime is 1913161121. The reversal of 1913161097 is 7901613191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1748577856 + 164583241 = 41816^2 + 12829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913161097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1913161097.

It is not a weakly prime, because it can be changed into another prime (1913161027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956580548 + 956580549.

It is an arithmetic number, because the mean of its divisors is an integer number (956580549).

Almost surely, 2^1913161097 is an apocalyptic number.

It is an amenable number.

1913161097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913161097 is an equidigital number, since it uses as much as digits as its factorization.

1913161097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 1913161097 is about 43739.6970382741. The cubic root of 1913161097 is about 1241.4155480653.

The spelling of 1913161097 in words is "one billion, nine hundred thirteen million, one hundred sixty-one thousand, ninety-seven".