18649351114 has 4 divisors (see below), whose sum is σ = 27974026674. Its totient is φ = 9324675556.

The previous prime is 18649351103. The next prime is 18649351121. The reversal of 18649351114 is 41115394681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41115394681 = 4057 ⋅10134433.

It can be written as a sum of positive squares in only one way, i.e., 18285800625 + 363550489 = 135225^2 + 19067^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4662337777 + ... + 4662337780.

Almost surely, 2^18649351114 is an apocalyptic number.

18649351114 is a deficient number, since it is larger than the sum of its proper divisors (9324675560).

18649351114 is an equidigital number, since it uses as much as digits as its factorization.

18649351114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9324675559.

The product of its digits is 103680, while the sum is 43.

The spelling of 18649351114 in words is "eighteen billion, six hundred forty-nine million, three hundred fifty-one thousand, one hundred fourteen".