3691313909 has 2 divisors, whose sum is σ = 3691313910. Its totient is φ = 3691313908.

The previous prime is 3691313881. The next prime is 3691313957. The reversal of 3691313909 is 9093131963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2595902500 + 1095411409 = 50950^2 + 33097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3691313909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3691313909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3691312909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845656954 + 1845656955.

It is an arithmetic number, because the mean of its divisors is an integer number (1845656955).

Almost surely, 2^3691313909 is an apocalyptic number.

It is an amenable number.

3691313909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691313909 is an equidigital number, since it uses as much as digits as its factorization.

3691313909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 44.

The square root of 3691313909 is about 60756.1841214538. The cubic root of 3691313909 is about 1545.4691005108.

The spelling of 3691313909 in words is "three billion, six hundred ninety-one million, three hundred thirteen thousand, nine hundred nine".