18793454065 has 8 divisors (see below), whose sum is σ = 22650627240. Its totient is φ = 14969108352.

The previous prime is 18793454063. The next prime is 18793454107. The reversal of 18793454065 is 56045439781.

It can be written as a sum of positive squares in 4 ways, for example, as 3257327329 + 15536126736 = 57073^2 + 124644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18793454065 - 2¹ = 18793454063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18793454063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8205604 + ... + 8207893.

It is an arithmetic number, because the mean of its divisors is an integer number (2831328405).

Almost surely, 2^18793454065 is an apocalyptic number.

It is an amenable number.

18793454065 is a deficient number, since it is larger than the sum of its proper divisors (3857173175).

18793454065 is a wasteful number, since it uses less digits than its factorization.

18793454065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16413731.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 18793454065 in words is "eighteen billion, seven hundred ninety-three million, four hundred fifty-four thousand, sixty-five".