18939868301 has 8 divisors (see below), whose sum is σ = 19157585400. Its totient is φ = 18722260480.

The previous prime is 18939868253. The next prime is 18939868327. The reversal of 18939868301 is 10386893981.

It can be written as a sum of positive squares in 4 ways, for example, as 7713406276 + 11226462025 = 87826^2 + 105955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18939868301 - 2¹⁰ = 18939867277 is a prime.

It is a super-2 number, since 2×18939868301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18939868331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351221 + ... + 401541.

It is an arithmetic number, because the mean of its divisors is an integer number (2394698175).

Almost surely, 2^18939868301 is an apocalyptic number.

It is an amenable number.

18939868301 is a deficient number, since it is larger than the sum of its proper divisors (217717099).

18939868301 is an equidigital number, since it uses as much as digits as its factorization.

18939868301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54639.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 18939868301 in words is "eighteen billion, nine hundred thirty-nine million, eight hundred sixty-eight thousand, three hundred one".