3691256741 has 2 divisors, whose sum is σ = 3691256742. Its totient is φ = 3691256740.

The previous prime is 3691256713. The next prime is 3691256743. The reversal of 3691256741 is 1476521963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3491628100 + 199628641 = 59090^2 + 14129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3691256741 is a prime.

Together with 3691256743, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3691256692 and 3691256701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3691256743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845628370 + 1845628371.

It is an arithmetic number, because the mean of its divisors is an integer number (1845628371).

Almost surely, 2^3691256741 is an apocalyptic number.

It is an amenable number.

3691256741 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691256741 is an equidigital number, since it uses as much as digits as its factorization.

3691256741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 3691256741 is about 60755.7136490059. The cubic root of 3691256741 is about 1545.4611221562.

The spelling of 3691256741 in words is "three billion, six hundred ninety-one million, two hundred fifty-six thousand, seven hundred forty-one".