3685553957 has 2 divisors, whose sum is σ = 3685553958. Its totient is φ = 3685553956.

The previous prime is 3685553939. The next prime is 3685553987. The reversal of 3685553957 is 7593555863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3623317636 + 62236321 = 60194^2 + 7889^2 .

It is a cyclic number.

It is not a de Polignac number, because 3685553957 - 2¹⁰ = 3685552933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3685553987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842776978 + 1842776979.

It is an arithmetic number, because the mean of its divisors is an integer number (1842776979).

Almost surely, 2^3685553957 is an apocalyptic number.

It is an amenable number.

3685553957 is a deficient number, since it is larger than the sum of its proper divisors (1).

3685553957 is an equidigital number, since it uses as much as digits as its factorization.

3685553957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010000, while the sum is 56.

The square root of 3685553957 is about 60708.7634283552. The cubic root of 3685553957 is about 1544.6648284429.

The spelling of 3685553957 in words is "three billion, six hundred eighty-five million, five hundred fifty-three thousand, nine hundred fifty-seven".