1349609081 has 2 divisors, whose sum is σ = 1349609082. Its totient is φ = 1349609080.

The previous prime is 1349609033. The next prime is 1349609099. The reversal of 1349609081 is 1809069431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083397225 + 266211856 = 32915^2 + 16316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349609081 - 2⁶ = 1349609017 is a prime.

It is a super-2 number, since 2×1349609081² = 3642889343035329122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1349609381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674804540 + 674804541.

It is an arithmetic number, because the mean of its divisors is an integer number (674804541).

Almost surely, 2^1349609081 is an apocalyptic number.

It is an amenable number.

1349609081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349609081 is an equidigital number, since it uses as much as digits as its factorization.

1349609081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 1349609081 is about 36737.0260228016. The cubic root of 1349609081 is about 1105.1027609299.

The spelling of 1349609081 in words is "one billion, three hundred forty-nine million, six hundred nine thousand, eighty-one".