3918552008693 has 6 divisors (see below), whose sum is σ = 4558315602006. Its totient is φ = 3358758864552.

The previous prime is 3918552008689. The next prime is 3918552008699. The reversal of 3918552008693 is 3968002558193.

It can be written as a sum of positive squares in only one way, i.e., 2373023173444 + 1545528835249 = 1540462^2 + 1243193^2 .

It is not a de Polignac number, because 3918552008693 - 2² = 3918552008689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918552008699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39985224530 + ... + 39985224627.

It is an arithmetic number, because the mean of its divisors is an integer number (759719267001).

Almost surely, 2^{3918552008693} is an apocalyptic number.

It is an amenable number.

3918552008693 is a deficient number, since it is larger than the sum of its proper divisors (639763593313).

3918552008693 is an equidigital number, since it uses as much as digits as its factorization.

3918552008693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79970449171 (or 79970449164 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 59.

The spelling of 3918552008693 in words is "three trillion, nine hundred eighteen billion, five hundred fifty-two million, eight thousand, six hundred ninety-three".