3547695649 has 2 divisors, whose sum is σ = 3547695650. Its totient is φ = 3547695648.

The previous prime is 3547695647. The next prime is 3547695659. The reversal of 3547695649 is 9465967453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2429997025 + 1117698624 = 49295^2 + 33432^2 .

It is a cyclic number.

It is not a de Polignac number, because 3547695649 - 2¹ = 3547695647 is a prime.

It is a super-3 number, since 3×3547695649³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 3547695647, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3547695593 and 3547695602.

It is not a weakly prime, because it can be changed into another prime (3547695647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1773847824 + 1773847825.

It is an arithmetic number, because the mean of its divisors is an integer number (1773847825).

Almost surely, 2^3547695649 is an apocalyptic number.

It is an amenable number.

3547695649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3547695649 is an equidigital number, since it uses as much as digits as its factorization.

3547695649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 58.

The square root of 3547695649 is about 59562.5356159390. The cubic root of 3547695649 is about 1525.1601586159.

The spelling of 3547695649 in words is "three billion, five hundred forty-seven million, six hundred ninety-five thousand, six hundred forty-nine".