18734614399 has 16 divisors (see below), whose sum is σ = 19235376000. Its totient is φ = 18238362624.

The previous prime is 18734614387. The next prime is 18734614463. The reversal of 18734614399 is 99341643781.

It is a cyclic number.

It is not a de Polignac number, because 18734614399 - 2¹⁵ = 18734581631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734614309) 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, 12093877 + ... + 12095425.

It is an arithmetic number, because the mean of its divisors is an integer number (1202211000).

Almost surely, 2^18734614399 is an apocalyptic number.

18734614399 is a deficient number, since it is larger than the sum of its proper divisors (500761601).

18734614399 is a wasteful number, since it uses less digits than its factorization.

18734614399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its digits is 3919104, while the sum is 55.

The spelling of 18734614399 in words is "eighteen billion, seven hundred thirty-four million, six hundred fourteen thousand, three hundred ninety-nine".