3646385497 has 2 divisors, whose sum is σ = 3646385498. Its totient is φ = 3646385496.

The previous prime is 3646385489. The next prime is 3646385563. The reversal of 3646385497 is 7945836463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1927122201 + 1719263296 = 43899^2 + 41464^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646385497 - 2³ = 3646385489 is a prime.

It is a super-2 number, since 2×3646385497² = 26592254385463874018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3646385467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823192748 + 1823192749.

It is an arithmetic number, because the mean of its divisors is an integer number (1823192749).

Almost surely, 2^3646385497 is an apocalyptic number.

It is an amenable number.

3646385497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646385497 is an equidigital number, since it uses as much as digits as its factorization.

3646385497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 55.

The square root of 3646385497 is about 60385.3086189017. The cubic root of 3646385497 is about 1539.1733204392.

The spelling of 3646385497 in words is "three billion, six hundred forty-six million, three hundred eighty-five thousand, four hundred ninety-seven".