1913161069 has 2 divisors, whose sum is σ = 1913161070. Its totient is φ = 1913161068.

The previous prime is 1913161057. The next prime is 1913161097. The reversal of 1913161069 is 9601613191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 979064100 + 934096969 = 31290^2 + 30563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913161069 is a prime.

It is a super-2 number, since 2×1913161069² = 7320370551874445522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913161049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956580534 + 956580535.

It is an arithmetic number, because the mean of its divisors is an integer number (956580535).

Almost surely, 2^1913161069 is an apocalyptic number.

It is an amenable number.

1913161069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913161069 is an equidigital number, since it uses as much as digits as its factorization.

1913161069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 1913161069 is about 43739.6967181987. The cubic root of 1913161069 is about 1241.4155420091.

It can be divided in two parts, 19131 and 61069, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 1913161069 in words is "one billion, nine hundred thirteen million, one hundred sixty-one thousand, sixty-nine".