18770975401 has 4 divisors (see below), whose sum is σ = 18794178900. Its totient is φ = 18747771904.

The previous prime is 18770975393. The next prime is 18770975407. The reversal of 18770975401 is 10457907781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10457907781 = 19 ⋅550416199.

It can be written as a sum of positive squares in 2 ways, for example, as 8233747600 + 10537227801 = 90740^2 + 102651^2 .

It is a cyclic number.

It is not a de Polignac number, because 18770975401 - 2³ = 18770975393 is a prime.

It is a super-3 number, since 3×18770975401³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (18770975407) 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 3 ways as a sum of consecutive naturals, for example, 11600536 + ... + 11602153.

It is an arithmetic number, because the mean of its divisors is an integer number (4698544725).

Almost surely, 2^18770975401 is an apocalyptic number.

It is an amenable number.

18770975401 is a deficient number, since it is larger than the sum of its proper divisors (23203499).

18770975401 is an equidigital number, since it uses as much as digits as its factorization.

18770975401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23203498.

The product of its (nonzero) digits is 493920, while the sum is 49.

The spelling of 18770975401 in words is "eighteen billion, seven hundred seventy million, nine hundred seventy-five thousand, four hundred one".