1693979449 has 2 divisors, whose sum is σ = 1693979450. Its totient is φ = 1693979448.

The previous prime is 1693979437. The next prime is 1693979461. The reversal of 1693979449 is 9449793961.

It is a balanced prime because it is at equal distance from previous prime (1693979437) and next prime (1693979461).

It can be written as a sum of positive squares in only one way, i.e., 1299242025 + 394737424 = 36045^2 + 19868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1693979449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1693979479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846989724 + 846989725.

It is an arithmetic number, because the mean of its divisors is an integer number (846989725).

Almost surely, 2^1693979449 is an apocalyptic number.

It is an amenable number.

1693979449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1693979449 is an equidigital number, since it uses as much as digits as its factorization.

1693979449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13226976, while the sum is 61.

The square root of 1693979449 is about 41157.9815953115. The cubic root of 1693979449 is about 1192.0726182900.

The spelling of 1693979449 in words is "one billion, six hundred ninety-three million, nine hundred seventy-nine thousand, four hundred forty-nine".