18649388701 has 32 divisors (see below), whose sum is σ = 20347464960. Its totient is φ = 17039683584.

The previous prime is 18649388657. The next prime is 18649388707. The reversal of 18649388701 is 10788394681.

It is not a de Polignac number, because 18649388701 - 2⁹ = 18649388189 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18649388707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35658226 + ... + 35658748.

It is an arithmetic number, because the mean of its divisors is an integer number (635858280).

Almost surely, 2^18649388701 is an apocalyptic number.

It is an amenable number.

18649388701 is a deficient number, since it is larger than the sum of its proper divisors (1698076259).

18649388701 is a wasteful number, since it uses less digits than its factorization.

18649388701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 18649388701 in words is "eighteen billion, six hundred forty-nine million, three hundred eighty-eight thousand, seven hundred one".