1696539389 has 2 divisors, whose sum is σ = 1696539390. Its totient is φ = 1696539388.

The previous prime is 1696539379. The next prime is 1696539419. The reversal of 1696539389 is 9839356961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1684692025 + 11847364 = 41045^2 + 3442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1696539389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1696539359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848269694 + 848269695.

It is an arithmetic number, because the mean of its divisors is an integer number (848269695).

Almost surely, 2^1696539389 is an apocalyptic number.

It is an amenable number.

1696539389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1696539389 is an equidigital number, since it uses as much as digits as its factorization.

1696539389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9447840, while the sum is 59.

The square root of 1696539389 is about 41189.0688047205. The cubic root of 1696539389 is about 1192.6728023636.

The spelling of 1696539389 in words is "one billion, six hundred ninety-six million, five hundred thirty-nine thousand, three hundred eighty-nine".