18074278657 has 8 divisors (see below), whose sum is σ = 18659513600. Its totient is φ = 17489180880.

The previous prime is 18074278643. The next prime is 18074278661. The reversal of 18074278657 is 75687247081.

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 18074278657 - 2⁷ = 18074278529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18074278598 and 18074278607.

It is not an unprimeable number, because it can be changed into a prime (18074278457) 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, 279118 + ... + 337720.

It is an arithmetic number, because the mean of its divisors is an integer number (2332439200).

Almost surely, 2^18074278657 is an apocalyptic number.

It is an amenable number.

18074278657 is a deficient number, since it is larger than the sum of its proper divisors (585234943).

18074278657 is an equidigital number, since it uses as much as digits as its factorization.

18074278657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68583.

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 18074278657 in words is "eighteen billion, seventy-four million, two hundred seventy-eight thousand, six hundred fifty-seven".