18427500001 has 4 divisors (see below), whose sum is σ = 18606407872. Its totient is φ = 18248592132.

The previous prime is 18427499977. The next prime is 18427500029. The reversal of 18427500001 is 10000572481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10000572481 = 37321 ⋅267961.

It is a cyclic number.

It is not a de Polignac number, because 18427500001 - 2⁵ = 18427499969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18427500901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89453781 + ... + 89453986.

It is an arithmetic number, because the mean of its divisors is an integer number (4651601968).

Almost surely, 2^18427500001 is an apocalyptic number.

It is an amenable number.

18427500001 is a deficient number, since it is larger than the sum of its proper divisors (178907871).

18427500001 is a wasteful number, since it uses less digits than its factorization.

18427500001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178907870.

The product of its (nonzero) digits is 2240, while the sum is 28.

The spelling of 18427500001 in words is "eighteen billion, four hundred twenty-seven million, five hundred thousand, one".