3651731 has 2 divisors, whose sum is σ = 3651732. Its totient is φ = 3651730.

The previous prime is 3651673. The next prime is 3651757. The reversal of 3651731 is 1371563.

It is a happy number.

It is an a-pointer prime, because the next prime (3651757) can be obtained adding 3651731 to its sum of digits (26).

It is a strong prime.

It is an emirp because it is prime and its reverse (1371563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3651731 - 2¹⁰ = 3650707 is a prime.

It is a super-2 number, since 2×3651731² = 26670278592722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3651731.

It is not a weakly prime, because it can be changed into another prime (3651761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825865 + 1825866.

It is an arithmetic number, because the mean of its divisors is an integer number (1825866).

Almost surely, 2^3651731 is an apocalyptic number.

3651731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651731 is an equidigital number, since it uses as much as digits as its factorization.

3651731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 26.

The square root of 3651731 is about 1910.9502871608. The cubic root of 3651731 is about 153.9925082092.

The spelling of 3651731 in words is "three million, six hundred fifty-one thousand, seven hundred thirty-one".