1696548649 has 2 divisors, whose sum is σ = 1696548650. Its totient is φ = 1696548648.

The previous prime is 1696548631. The next prime is 1696548697. The reversal of 1696548649 is 9468456961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1185562624 + 510986025 = 34432^2 + 22605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1696548649 - 2⁷ = 1696548521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1696548593 and 1696548602.

It is not a weakly prime, because it can be changed into another prime (1696540649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848274324 + 848274325.

It is an arithmetic number, because the mean of its divisors is an integer number (848274325).

Almost surely, 2^1696548649 is an apocalyptic number.

It is an amenable number.

1696548649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1696548649 is an equidigital number, since it uses as much as digits as its factorization.

1696548649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 58.

The square root of 1696548649 is about 41189.1812130321. The cubic root of 1696548649 is about 1192.6749722965.

The spelling of 1696548649 in words is "one billion, six hundred ninety-six million, five hundred forty-eight thousand, six hundred forty-nine".