3654670764509 has 2 divisors, whose sum is σ = 3654670764510. Its totient is φ = 3654670764508.

The previous prime is 3654670764439. The next prime is 3654670764593. The reversal of 3654670764509 is 9054670764563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2831132664409 + 823538100100 = 1682597^2 + 907490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3654670764509 is a prime.

It is a super-2 number, since 2×3654670764509² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3654670769509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1827335382254 + 1827335382255.

It is an arithmetic number, because the mean of its divisors is an integer number (1827335382255).

Almost surely, 2^{3654670764509} is an apocalyptic number.

It is an amenable number.

3654670764509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3654670764509 is an equidigital number, since it uses as much as digits as its factorization.

3654670764509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 114307200, while the sum is 62.

The spelling of 3654670764509 in words is "three trillion, six hundred fifty-four billion, six hundred seventy million, seven hundred sixty-four thousand, five hundred nine".