3698634109 has 2 divisors, whose sum is σ = 3698634110. Its totient is φ = 3698634108.

The previous prime is 3698634089. The next prime is 3698634151. The reversal of 3698634109 is 9014368963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3552756025 + 145878084 = 59605^2 + 12078^2 .

It is a cyclic number.

It is not a de Polignac number, because 3698634109 - 2¹⁷ = 3698503037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3698634179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1849317054 + 1849317055.

It is an arithmetic number, because the mean of its divisors is an integer number (1849317055).

Almost surely, 2^3698634109 is an apocalyptic number.

It is an amenable number.

3698634109 is a deficient number, since it is larger than the sum of its proper divisors (1).

3698634109 is an equidigital number, since it uses as much as digits as its factorization.

3698634109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 3698634109 is about 60816.3967117421. The cubic root of 3698634109 is about 1546.4900263110.

The spelling of 3698634109 in words is "three billion, six hundred ninety-eight million, six hundred thirty-four thousand, one hundred nine".