3649772917429 has 2 divisors, whose sum is σ = 3649772917430. Its totient is φ = 3649772917428.

The previous prime is 3649772917387. The next prime is 3649772917487. The reversal of 3649772917429 is 9247192779463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3649620518404 + 152399025 = 1910398^2 + 12345^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649772917429 - 2¹¹ = 3649772915381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3649772917499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824886458714 + 1824886458715.

It is an arithmetic number, because the mean of its divisors is an integer number (1824886458715).

Almost surely, 2^{3649772917429} is an apocalyptic number.

It is an amenable number.

3649772917429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649772917429 is an equidigital number, since it uses as much as digits as its factorization.

3649772917429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288054144, while the sum is 70.

The spelling of 3649772917429 in words is "three trillion, six hundred forty-nine billion, seven hundred seventy-two million, nine hundred seventeen thousand, four hundred twenty-nine".