3649718648899 has 16 divisors (see below), whose sum is σ = 3702458648160. Its totient is φ = 3597392494080.

The previous prime is 3649718648839. The next prime is 3649718648959. The reversal of 3649718648899 is 9988468179463.

It is an interprime number because it is at equal distance from previous prime (3649718648839) and next prime (3649718648959).

It is a cyclic number.

It is not a de Polignac number, because 3649718648899 - 2²⁹ = 3649181777987 is a prime.

It is a super-2 number, since 2×3649718648899² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649718648839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14726097 + ... + 14971885.

It is an arithmetic number, because the mean of its divisors is an integer number (231403665510).

Almost surely, 2^{3649718648899} is an apocalyptic number.

3649718648899 is a deficient number, since it is larger than the sum of its proper divisors (52739999261).

3649718648899 is a wasteful number, since it uses less digits than its factorization.

3649718648899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246630.

The product of its digits is 4514807808, while the sum is 82.

The spelling of 3649718648899 in words is "three trillion, six hundred forty-nine billion, seven hundred eighteen million, six hundred forty-eight thousand, eight hundred ninety-nine".