18348734365 has 16 divisors (see below), whose sum is σ = 23715946800. Its totient is φ = 13547699712.

The previous prime is 18348734353. The next prime is 18348734377. The reversal of 18348734365 is 56343784381.

It is an interprime number because it is at equal distance from previous prime (18348734353) and next prime (18348734377).

It can be written as a sum of positive squares in 8 ways, for example, as 54007801 + 18294726564 = 7349^2 + 135258^2 .

It is a cyclic number.

It is not a de Polignac number, because 18348734365 - 2⁹ = 18348733853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480081 + ... + 516889.

It is an arithmetic number, because the mean of its divisors is an integer number (1482246675).

Almost surely, 2^18348734365 is an apocalyptic number.

It is an amenable number.

18348734365 is a deficient number, since it is larger than the sum of its proper divisors (5367212435).

18348734365 is a wasteful number, since it uses less digits than its factorization.

18348734365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44496.

The product of its digits is 5806080, while the sum is 52.

The spelling of 18348734365 in words is "eighteen billion, three hundred forty-eight million, seven hundred thirty-four thousand, three hundred sixty-five".