18127746001 has 4 divisors (see below), whose sum is σ = 18135374692. Its totient is φ = 18120117312.

The previous prime is 18127745927. The next prime is 18127746011. The reversal of 18127746001 is 10064772181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10064772181 = 59 ⋅170589359.

It can be written as a sum of positive squares in 2 ways, for example, as 5767643025 + 12360102976 = 75945^2 + 111176^2 .

It is a cyclic number.

It is not a de Polignac number, because 18127746001 - 2²³ = 18119357393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18127746011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3810780 + ... + 3815533.

It is an arithmetic number, because the mean of its divisors is an integer number (4533843673).

Almost surely, 2^18127746001 is an apocalyptic number.

It is an amenable number.

18127746001 is a deficient number, since it is larger than the sum of its proper divisors (7628691).

18127746001 is an equidigital number, since it uses as much as digits as its factorization.

18127746001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7628690.

The product of its (nonzero) digits is 18816, while the sum is 37.

The spelling of 18127746001 in words is "eighteen billion, one hundred twenty-seven million, seven hundred forty-six thousand, one".