18071000254 has 4 divisors (see below), whose sum is σ = 27106500384. Its totient is φ = 9035500126.

The previous prime is 18071000219. The next prime is 18071000273. The reversal of 18071000254 is 45200017081.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18071000254² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4517750062 + ... + 4517750065.

It is an arithmetic number, because the mean of its divisors is an integer number (6776625096).

Almost surely, 2^18071000254 is an apocalyptic number.

18071000254 is a deficient number, since it is larger than the sum of its proper divisors (9035500130).

18071000254 is an equidigital number, since it uses as much as digits as its factorization.

18071000254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035500129.

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

The spelling of 18071000254 in words is "eighteen billion, seventy-one million, two hundred fifty-four", and thus it is an aban number.